I need help with AP Statistics ! I'll give brainliest , thanks and 30 points !
1. A student wonders if there is a relationship between foot length and height. She measures herself and six classmates and produces the following data (heights and foot lengths are in centimeters):

Height 158 160 149 169 152 150 157
Foot Length 17 20 15 18 12 13 16

(a) Is there a clear explanatory variable and response variable in this setting? If so, tell
which is which. If not, explain why not.

(b) Make a well-labeled scatterplot of these data.

(c) Based on the scatterplot, describe the pattern, if any, in the relationship between the heights and foot lengths of these students.

(d) Use your calculator to find the correlation r between the height and foot length. Do the data show any evidence of a relationship between these two variables? Explain.

(e) How would r change if :
• all the heights were reduced by 5 centimeters?
• heights were measured in inches rather than centimeters? (There are 2.54 centimeters in an inch.)

(f) Suppose another student with foot length 19 cm. and height 167 cm. were added to the data. How would this influence r?

Answers

Answer 1

Answer:

a)can weight= explanatory

fuel efficiency= response

can weight is a factor in determining fuel efficiency

b) negative association

c) linear with 1 possible outline

d)negative but the outline will not allow it to be -0.9

e)high fuel efficiency given of the car*maybe it is a hybrid*

f)corrleation to -1


Related Questions

Access this passage to learn about the National Export Initiative.
Then, write two to three sentences explaining the purpose of the initiative and how it is designed to benefit the US economy.

Answers

Answer:

The National Export Initiative is a program that is designed to lower barriers for American businesses trying to enter markets for exports. The program hopes to help businesses to produce goods for international sale. This would help to increase US productivity, GDP, and employment.

Explanation:

Just did this course

Answer:

The National Export Initiative is a program that is designed to lower barriers for American businesses trying to enter markets for exports. The program hopes to help businesses to produce goods for international sale. This would help to increase US productivity, GDP, and employment.

Explanation:

the answer for edge 2020

How should I come out as romantic? (to my parents

Answers

Answer:

Say it straight forward and to the point :)

Explanation:

Yep :) be brave I literally get anxiety from asking people questions about literally anything

Explain ONE specific example of religious syncretism other than Vodou that
resulted from the Atlantic slave trade.

Answers

Santeria

a pantheistic Afro-Cuban folk religion developed from the beliefs and customs of the Yoruba people and incorporating some elements of the Catholic religion.

Which option should you choose to send an email you've received to a new person? Reply All Reply Forward CC ​

Answers

Answer:

Forward

Explanation:

The option you should choose to send an email you've received to a new person is forward.

What is an email?

An email is the messages conveyed by electronic means from one PC client to at least one beneficiaries through an organization.

When a person receives an email from a new person and he has to send that email to another person, he will choose the forward option.

Thus, the option you should choose to send an email you've received to a new person is forward.

Learn more about email.

https://brainly.com/question/14666241

#SPJ2

The proclamation of 1763 and the Quebec act of 1774 both helped lay the groundwork for the American revolution because they each

Answers

Answer:

interfered with colonial claims to western lands

Explanation :

The American revolution began as a means of resistance against Britain. With the proclamation of 1763 and the Quebec act of 1774, they were limiting the colonies power by abusing their own power.

bart can type 296 words in 8 minutes. At this rate how many words can he type in 20 mintues

Answers

Answer:

740

Explanation:

Select three of the debatable issues you found and recorded in your T-chart from the "Format and Scoring Criteria" lesson and write one thesis statement for each.

Has anyone done this for AP English Lang and Comp on edge??

Answers

Answer:

For centuries translation and language learning went hand in hand as the

grammar translation model used to teach Latin, principally for reading knowledge,

was applied to the teaching of modern languages. A growing recognition of the

disconnect between grammar translation models and theories of second language

acquisition led to the development of communicative approaches to language

learning and teaching during the last half of the 20th century. This recognition

does not mean that translation has disappeared from the classroom, however.

Wilkerson (2008) shows that even when teachers aim to use the target language,

English is often employed to translate classroom dialogue. While the place of the

first language in the language classroom is the subject of ongoing debate–see, for

instance, Rell (2005)–the activities and teaching strategies outlined here are intended to encourage student reflection on the translation process and on the

differences between languages and not to replace communicative teaching in the

target language.

Explanation:

Answer:

Capital punishment-

Capital punishment should be banned and high security prisons should be used in place of it.

Student debt crisis-

At least 15% of US tax dollars should go towards the collective $1.6 trillion student debt.

Abortion-

A woman's choice of what to do with her body should not be decided by men or any male that has a higher power.

Explanation:


What discovery was made about the frontal lobe of the brain during observational
learning?

Answers

Answer:

lol how is the journal coming along?

Explanation:

boof

It was discovered that the mirror neurons of the frontal lobe neurons fires when human perform certain actions or observe another doing so.

What is the frontal lobe?

This part of the brain is located at the most anterior part of the brain that is responsible for voluntary movement, expressive language etc.

However, the scientist discovered during an observational learning that the mirror neurons of the frontal lobe neurons fires when human perform certain actions or observe another doing so.

Read more about frontal lobe

brainly.com/question/19260219

#SPJ2

Please can you help me

Answers

Answer:

[tex] x = 39 [/tex]

Explanation:

Recall that one of the properties of a rhombus is that opposite angels are congruent. Therefore, given Rhombus RSTU, thus:

m<T = m<R

[tex] 3x - 51 = 2x - 12 [/tex]

Collect like terms

[tex] 3x - 2x = 51 - 12 [/tex]

[tex] x = 39 [/tex]

What are ethical issues in criminology

Answers

Criminological researchers confront complex ethical issues ranging from questions regarding fabrication of data, plagiarism and confidentiality to subject rights and deceptions.

You can find more on google scholar if you want
Good luck :)

Which of these could be the guide words on the page where you would find an entry
for the word "indicate"?
A
incident - inoculate
B
ingratiate - inhibit
с
initial - innkeeper
D
inbound - inch
HELP PLEASE!

Answers

Explanation:

It is C hgggggggftdryfghkjkiu

Answer:

its A

Explanation:

IM PAYING FOR PLUS SO WHY AM I STILL LIMITED TO 15 QUESTIONS AND FORCED TO WATCH ADDS

Answers

Answer:

Sadly, Yes you will be forced to do that but when you buy plus you won't have to do that-

Answer:

If you buy PLUS then things will be okay but otherwise yes, you'll be forced to buy PLUS

1. Define, as simply as you can, reinforcement and punishment.
2. Explain how one might accomplish reinforcement and punishment through the use of positive reinforcement, negative reinforcement, positive punishment, and negative punishment. Include examples where appropriate.

Answers

Answer:

1. Reinforcement is when you are rewarded for doing something right. Punishment is to teach you that you are not doing something right and you must learn from it.

Explanation:

:)

Answer:

1. Reinforcement and punishment are two separate things. Reinforcement is used to increase the tendency of a particular response, while on the other hand, punishment is used to decrease the tendency of a particular response.

2. To accomplish reinforcement, one may use positive reinforcement or negative reinforcement. Positive reinforcement is a type of reinforcement in which the addition of a rewarding or pleasant stimulus increases the tendency of a particular response. For example, when a student receives an A+ on a test, the student gets to go to the ice cream shop. Negative reinforcement is a type of reinforcement in which the removal of an unwanted or unpleasant stimulus increases the tendency of a particular behavior. For example, when a student receives an A+ on a test, they no don't have to wash the dishes that night.

To accomplish punishment, one may use positive punishment or negative punishment. Positive punishment is a type of punishment in which an unwanted or unpleasant stimulus decreases the tendency of a particular response/behavior. For example, a teen stays out past curfew and now has to do extra chores. Negative punishment is a type of punishment in which the removal of a rewarding or pleasant stimulus decreases the tendency of a particular response. An example of this would be a child getting in trouble and having her favorite toy taken away.

Explanation:

:)!

HELP! Which activities do discussion groups engage in? Check all that apply.

think-alouds
think-alones
barnstorming
snowballing
brainstorming

Answers

Everything except snowballing and BARNstorming

Answer:

think-alouds

snowballing

brainstorming

Explanation: Edge 2020 got it right

When looking at the runway from the window of a plane, the edges of the runway seem to converge in the distance. Which monocular cue does this demonstrate?

Interposition

Aerial perspective

Linear perspective

Overlap

Relative size​

Answers

Answer:

Linear perspective

Explanation:

Looking at the options, the correct answer is linear perspective because in linear perspective, when objects of a known distance subtends a smaller angle, we interpret it as being further away.

Now, this means that Parallel lines will converge with increasing distance such as seen in roads and railway lines.

Whereas, all the other options given don't make the runway seem to converge in the distance.

Evaluate the extent to which the Portuguese transformed maritime trade in the Indian Ocean in the sixteenth century. Explain any continuities during this time period.
Serious answers only please!

Answers

Answer:

At the time of the fall of Constantinople to the Ottomans, the trade route through the Middle East to China and India was closed for the Christian European nations. Due to this situation, all the European powers, especially Spain and Portugal, began to look for alternative routes through which to access these markets.

In the case of the Portuguese, they began their exploration to the east, surrounding the African continent to reach the Indian Ocean through it. Thus, they began to establish colonies along their routes, both in Africa (Angola, Cape Verde, etc.) and in Asia (Goa, Macao, etc.). In this way, through the establishment of commercial posts, the Portuguese began to dominate these routes territorially, charging passage fees and establishing fixed posts in which they developed trade with the nations of the region.

The Portuguese transferred and dominated the maritime trade system of the Indian ocean before they took force.

They took over the trading cities and destroyed the Muslim trade ships. As they were good at shipbuilding they traded with many nations and took control of the commerce of the Indian ocean. Their trade was made easier by the monsoon-laden winds. Due to they capture several lands they explored eastern and western parts of the African continent and gathered a large number of resources.

Learn more about the which the Portuguese transformed.

brainly.com/question/16272408.

When scientists first studied electromagnetic energy, many theories were proposed to explain how these waves travel through space. Which statement below best describes how scientists arrived at the current understanding of electromagnetic energy?

A.Scientists all agreed with a single researcher who proposed the current theory.


B.Scientists completed internet searches of all available data to arrive at the current theory.


C.Scientists debated the theories with each other and compared the theories with scientific observations.


D.Scientists were able to observe the light from the brightest star in space, which verified the current theory.

Answers

Answer:

D

Explanation:

It sounds the most reasonable

Answer:

D i believe

Explanation:

Citing data in the graphs, explain how media and communications technology can be used to preserve indigenous languages in the Americas.

The answer needs to show the how or why. Use words like "because", "this shows", or "this proves" in the response. Use ACE strategy (Answer, Cite, Explain)
2-3 Sentences

Please and Thanks :)

Answers

The correct answer to this open question is the following.

Mass media and communications technology can be used to preserve indigenous languages in the Americas in different ways.

According to the graphics attached, we can see that in the Americas, 17% of the languages are lost and 16% are endangered.

This data is critical and concerns not only scholars or historians, but it has to worry all the citizens because part of our history can be erased if indigenous languages disappear.

Mass media can be used to help solve this issue because modern technology has no frontiers. If governments invest in proper technological infrastructure to take modern communications systems to the tribes or far away places where many tribes inhabit, this could be a direct way to rescue those endangered languages. This possibility shows that there are options available. The use of the internet is a great resource, proving that no matter the distance, every member of a society or indigenous tribe can be connected and could take classes on the internet, or listening to news broadcasting systems in their former language, as well as reading publications in their languages.

If a country has a crude birth rate of 24 per 1,000 and a crude death rate of 8 per 1,000, the natural annual percent increase of its population is

Answers

Answer:

1.6%

Explanation:

The natural annual percent increase of its population is 1.6%.

Since the country has a crude birth rate of 24 per 1,000, this can be represented as a decimal which will be 0.024.

Since the crude death rate is 8 per 1,000, this will be represented as a decimal as: 0.008.

Therefore, the natural annual percent increase of its population will be:

= 0.024 - 0.008

= 0.016

= 1.6%.

Read related link on:

https://brainly.com/question/18215126

An individual who drinks alcohol daily finds it necessary to drink increasing amounts to achieve the state of well-being attained in the past. This
individual is showing

Answers

Answer:

alcohol is a depressant. depresses the central nervous system, slows neural processing (sympathetic system activity) skills deteriorate, memory disruption, reduces self awareness, can shrink the brain

Binge drinking: impairs growth of synaptic connection, contributes to nerve death

Briefly explain ONE important connection between the economic systems of the North and the South in the same period.

Answers

Answer:

An important connection between the economies of the north and south of the United States in the run-up to the Civil War was that the south was the primary producer of the raw materials used by factories and manufacturing industries in the north of the country.

Thus, there was a kind of internal trade between both regions, where the south was the main producer of raw materials, such as cotton, which was used by the northern textile industry for the production of different fabrics that were later exported to the nations of Europe.

An important connection between the economic systems of the North and the South was that there was trade between the regions.

It should be noted that a vital connection between the economies of the North and South was that the South was the producer of raw materials that was used in the country.

Raw materials such as silk, sugarcane, etc were produced in the South and were transported to other parts of the country. There were used by industries for the production of clothes, etc.

Read related link on:

https://brainly.com/question/25114763


Which of the following is an example of an ethnic religion?
А. Islam
B. Mormonism
С. Buddhism
D. Judaism
E. Roman Catholicism

Answers

D, Judaism. It’s a culture as well as a religion. It’s both a religion and an ethnicity:)

Over 14 million people worldwide practice the ethnic religion known as Judaism. There are 5 million Jews in the United States and 6 million in Israel. Thus, option D is correct.

What is an example of an ethnic religion?

The narrative claims that the founder of Judaism, a Hebrew man by the name of Abraham, was the one to whom God first revealed himself.

Jews hold that Abraham and his offspring were selected individuals who would found a great nation, and that God formed a particular covenant with them.

Judaism is not only a thriving religion in and of itself, but it is also the origin of both Christianity and Islam. Without knowledge of Judaism's roots, it is impossible to comprehend the origins of these religions. With a majority of Jews, Israel is the only nation on earth.

Therefore, Judaism is an example of an ethnic religion.

Learn more about Judaism here:

https://brainly.com/question/11489285

#SPJ5

The following table shows summary statistics, in thousands, for the number of electrical workers and the number of concrete workers in the construction industry each month for the past 5 years.

Based on the 1.5×IQR rule for outliers, which of the following statements is a correct comparison of the two distributions?

Answers

Answer:

The electrical  workers data is correct comparison of the two distributions based on the 1.5× IQR rule for outliers.

Explanation:

Outlier> 1.5 *IQR + 3rd Quartile

Outlier < 1st Quartile-1.5 *IQR

where

Interquartile Range (IQR) = 3rd Quartile- 1st Quartile

                   IQR (electrical) = 320-278= 42

                   IQR (concrete) = 308- 262= 46

Outlier for Electrical Co workers=

Outlier> 1.5 *IQR + 3rd Quartile= 1.5*42 + 320= 63+320= 383

Outlier < 1st Quartile-1.5 *IQR=278-1.5*42=278-63= 215

The minimum for electrical workers is 239 and maximum is 330.

215 < 239

383> 330

By comparing the values we find there are no outliers in the electrical workers data.

Outlier for Concrete Co workers=

Outlier> 1.5 *IQR + 3rd Quartile= 1.5*46 + 308= 69+308= 377

Outlier < 1st Quartile-1.5 *IQR=262-1.5*46=262-69= 193

The minimum for concrete workers is 186 and maximum is 335.

377>335

193>186 The minimum is the outlier.

By comparing the values we find there is one outlier in the concrete workers data.

POINTsssss!

What is seen in the middle of March and April that can’t be seen at the beginning or end of either month?

Answers

Answer:

Is it the letter ¨ R ¨

=w=

Explanation:

Thanks for the points tho  , there greatly appreciated !

Hope you have a wonderful rest of your day !

Sleepy~

The letter R lol I love these

Explain the degree to which globalization can explain the loss of indigenous languages inAfrica since the 1970s.

The answer needs to show the how or why. Use words like "because", "this shows", or "this proves" in the response. Use ACE strategy (Answer, Cite, Explain)
2-3 Sentences

Please and Thanks :)

Answers

This is your answer

The indigenous ancestors are so caught up into speaking a very popular language like English and isn't passing on their original language.It only takes one generation to stop passing down a language for them to have descendants that won't know anything of that language.This can happen by choice or by force.

My example:For example my people (Hebrew Israelites) were forced to forget their language (during slavery) and that's how us African Americans now speak English and most of us don't even know what language our ancestors spoke bc they are too busy trying to be accepted by another set of humans.

Explanation

The distribution of scarce resources and rewards is determined on the basis of achieved statuses in which system?
a.
an open system
c.
a closed system
b.
a caste system
d.
a class system

Answers

Answer:

D

Explanation:

2020 edge

The distribution of scarce resources and rewards is determined on the basis of achieved statuses in a class system (Option D).

What is a class system?

A class system can be defined as a type of social stratification that weights both collective issues and individual accomplishment.

In a class system, individuals have similar features in regard to social characteristics such as educational possibilities or money income.

A class system is common in societies of developed countries where prevails social equality.

In conclusion, the distribution of scarce resources and rewards is determined on the basis of achieved statuses in a class system (Option D).

Learn more about class systems here:

https://brainly.com/question/8873112

Write an overview of the impact of cognition on learning, and discuss how it has changed behaviorism. In your response, discuss the concepts of cognitive map, latent learning, insight, intrinsic motivation, and extrinsic motivation, and give a personal example of each concept.

this is for ap psych so just write a free response basically

Answers

Answer:

Cognition helps us during our emotions, perceptions, and senses, to gain awareness. Learning requires the acquisition of skills through experience, research, and instruction. It is not possible to learn details if the pupil is overwhelmed. And we are seeing that even as time goes on, we grow and that this enables everybody a stronger person of ourselves. Perhaps it makes change easy for any of us. Throughout all sorts of backgrounds, cognition has almost always motivated us, but that always encourages everyone to be a stronger version every once throughout a while of development.

Over experience, we had to make sure these people fall throughout the correct position as well as the data flow becomes crisp and seamless. I learned the most from my mum, and by studying and knowing situations in that same elite environment, this has already been instilled. This is a perfect way to evolve in life plus benefit from lessons from everyday life as well.

Explanation:

Answer:

Cognitive skills help students to build upon previous knowledge and ideas- with a deeper understanding of topics and stronger learning skills, students have the ability to approach schoolwork with enthusiasm and a little confidence. Cognition itself has effected behaviorism by altering the original conceptions of the human mind and creating a significant influence on classroom instruction and psychopathology. This has lead to the rise in cognitive science, and the eventual demise of the dominance of behaviorism. A cognitive map is a mental representation of the layout of someone's environment, for example, if a rat/multiple rats have explored a maze enough, they may act as though they have a cognitive map of it. An example of a cognitive map from my own life would be describing landmarks, roads, amount of turns, etc. to my friend who asked directions to come over to my house. Latent learning is a type of learning that does not happen at the exact time of learning, but instead appears later when suitable motivation and circumstances come into play. A personal example of latent learning would be learning how to do a math problem in class, but not immediately being able to do it without the incentive of getting a good grade on an upcoming test. Insight is when an answer to a problem becomes apparent quickly and abruptly- an example from my personal life would be keeping my dogs in a fenced-off area to keep them from running away. Intrinsic motivation is the act of completing an action without any obvious external rewards, like when I was younger, I used to read books so much and so often, just because I loved reading and wanted to do it. Extrinsic motivation, on the other hand, is doing/completing an activity for the purpose of a reward. For example, as a young child in the classroom, the promise of a "pizza-party" or "treat-day" drove me (and my classmates, of course) to do well and win the treats.

Explanation:

i saw that nobody really answered this and decided to write this up to help out! EDGE 2020 :D

If you don't have a preference for a question on a college search

Answers

When you do not have any  preference for a question that are  found on college search, you can simply skip them or you use the search option and type the question that you intend to ask.

What is college decision about?

The start of a student’s quest for  college admissions is one that can be very exciting and tedious sometimes. Most students do visit college counselor to helps in their research for colleges.

Most college counselor advise their students to be open and have some fun at the start of their college research work and it is not good to start the process without having any clue as to what you are looking for.

Conclusively, when stuck at a point in your college search, you can narrow you search to the specialization, school or course of your choice.

Learn more about college from

https://brainly.com/question/1128589

Wastewater from which source is technically considered graywater, but should be treated as blackwater?

toilet

shower

washing machine

kitchen sink

Answers

Answer:

the answer is D, kitchen sink

Explanation:

i just took the test.

Wastewater from kitchen sink is the technical source considered graywater, but should be treated as blackwater. Thus, option D is correct.

What is blackwater?

Blackwater is a mixture of the substances that come from cleansing water and greywater is the one that comes from the things that are not in the toilet.

Greywater that should be considered as blackwater is water from the sink. It contains fats and oils and many organic substances. Blackwater has a big range of materials that put it into this classification. It should be treated with chemicals for disinfection.

Blackwater requires proper biological or chemical treatment and disinfection so that it can be reused. Treated and disinfected blackwater can be used outdoor only, and often for the irrigation.

Therefore, Wastewater from kitchen sink is the technical source considered graywater, but should be treated as blackwater. Thus, option D is correct.

Learn more about  blackwater on:

https://brainly.com/question/29462608

#SPJ3

Which of the following statements about the first scuba diving suit is true? A) It weighed about 100 pounds. B) It was made in the 1950s. C) It weighed about 50 pounds. D) It was made in the 1870s.

Answers

D. It was made in the 1870s
The answer is D! Hoped this helped
Other Questions
(offering alot of points) Solve: (x + 3x 2x + 5) + (2x 5x + 4x 15). 10 2 (4) + 8 525354565 What is one advantage of using a credit card?A. People can avoid paying interest beyond the purchase amount.B. People can make expensive purchases and pay for them over time.C. People can pool their money with others to make a larger purchase.D. People can spend unlimited amounts of money if they pay it back. One phone company charges $0.15 per minute for long-distance calls. A secondcompany charges only $0.10 per minute for long-distance calls, but adds a monthlyfee of $4.95.a. Write a linear function representing the cost for the first company for x minutes. Chris is cutting a roll of cookie dough into pieces that are 1/2 inch thick. If the roll is 10 1/2 inches long how many pieces can he make? Consider the questions that Edna asks Robert in chapter 34 about where he got the silk tobacco pouch. Where did you buy this one? In Mexico?. They are very handsome, I suppose, those Mexican women; very picturesque, with their black eyes and their lace scarfs. What was she like the one who gave you the pouch? You must have known her very well. Did you visit at her house? Was it interesting? I should like to know and hear about the people you met, and the impressions they made on you. The Awakening, Kate Chopin span> What character trait is the author trying to establish in Edna through these questions? letter to a sister not to eat junk food because it is harmful to health A line is drawn through (7, 11) and (8, 9). The equation y 11 = y minus 11 equals StartFraction negative 4 Over 3 EndFraction left-parenthesis x plus 7 right-parenthesis.(x + 7) is written to represent the line. Which equations also represent the line? Check all that apply. Can anyone do it I did it, but I'm just checking:) What does this symbol mean Find the coordinates of the Circumcenter of the triangle below. Number the events in the order in which they occurred, from earliest to latest._____ William Becknell reaches Santa Fe._____ Mexico stops payment on its debt to the United States because of the dispute over the Texas-Mexico border._____ Mexico wins its independence from Spain._____ American families begin to arrive in California to settle._____ Relations between Mexico and the United States worsen when Texas is annexed to the United States._____ A small group of Americans seize the California town of Sonoma and proclaim the independent Republic of California._____ Polk sends John Slidell to Mexico to offer the Mexican government $30 million for California and New Mexico if Mexico will accept the Rio Grande as the Texas boundary._____ The United States controls all of California._____ In an attempt to provoke Mexico, James K. Polk orders General Zachary Taylor to lead a small army across the disputed border._____ Zachary Taylor secures the Texas border with a victory at Buena Vista._____ The United States pays Mexico $10 million for the Gadsden Purchase._____ The Americans take Mexico City._____ The Unites States and Mexico sign the Treaty of Hidalgo. Who was the US president at the end of World War II?Franklin D. RooseveltHarry TrumanDwight EisenhowerJohn F. Kennedy find mFE arc measure Find the error with subject-verb agreement. Select the incorrect verb and type it correctly.In some nations today, a monarch is simply a ceremonial figurehead withlittle political power. In others, however, the country's monarch bearthe responsibility for running the government. see the attachment. A bag of groceries has a weight of 44 Newtons. Find its mass in kilograms Which of these is an example of mutualism You are redecorating your room and you only have one wall left to paint. The length of the wall is 13.25 feet and the width of the wall is 9 ft. If the hardware store needs to know the area of the wall to determine how much paint you still need, what is the area that you will report to them? All of the following are landforms that can contribute to climate EXCEPTA. VolcanoesB. Mountains and shorelinesC. MountainsD. Iceberg