What is the significance of a correlation coefficient of -0.97?

A. The points all lie very close to the line of fit, and the
line is decreasing.

B. The points all lie very close to the line of fit, and the
line is increasing.

C. The points do not follow the line of fit and, the line is
decreasing.

D. The points do not follow the line of fit, and the line is
increasing.

Answers

Answer 1

Answer:

It's A. The points all lie very close to the line of fit, and the line is decreasing.

Step-by-step explanation:

Answer 2

The points all lie very close to the line of fit, and the line is decreasing option (A) is correct.

What is correlation?

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

[tex]\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}[/tex]

It is given that:

The value of the correlation coefficient r = -0.97

As we know,

If the value of the correlation coefficient is positive it represents the line of best-fit increasing.

If the value of the correlation coefficient is negative it represents the line of best fit decreasing.

If the value of r is close to 1 then we can say that the correlation between the two variables is very strong.

Thus, the points all lie very close to the line of fit, and the line is decreasing option (A) is correct.

Learn more about the correlation here:

brainly.com/question/11705632

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Related Questions

What is the equation of a line perpendicular to y = -5x + 4 that passes through (-10, 6)?

Answers

Answer:  y= 1/5 x + 8

Step-by-step explanation:

To get a perpendicular line, take the reciprocal of the original "m" in the equation and reverse the sign.

- 5 becomes +1/5

Then substitute the y and x values from the given coordinate into the new equation and solve for b

y= mx+b

6=1/5 (-10) + b

6 = -2 +b

8 = b   rewrite the new equation and substitute  8 for b

y= 1/5 x + 8

The attached screenshot shows the lines and the point.

Find the percent of decrease. Round to the nearest whole percent.
old: 374 boxes; new: 130 boxes

Answers

Answer:

B

Step-by-step explanation:

Q.3] Formula of (a - b)3 is​

Answers

waaaaaittttttttttttttttttttttttttttttttt

OMG I need halp and this is 8th grade math can someone help me I would really appreiate it.☺

Answers

Answer:

Eliana saves at a greater rate because her unit rate of $42 per week is greater than Lana's unit rate of $40 per week

hope this helps =3

sorry if im wrong

3 multiplied by what equals 4.5

Answers

Answer:

3 multiplied by 1.5 equals 4.5

Step-by-step explanation:

3*x= 4.5   We can do division

3x/3 = 4.5/3

x = 1.5

3 multiplied by 1.5 equals 4.5

Hope this helps!

-6 + 14 - 9 - (-3) + 8

Please help

Answers

Answer:

10

Step-by-step explanation:

−6+14−9−(−3)+8

=8−9−(−3)+8

=−1−(−3)+8

=2+8

=10

-6 + 14 - 9 - (-3) + 8

8 - 9 - (-3) +8

-1 + 3 + 8

2 + 8

10

what is 1/10 of 4.8​

Answers

Answer:

0.48

Step-by-step explanation:

Just move back one decimal point of 4.8

Answer: I just did this one lol

Step-by-step explanation:

10 percent *4.8 =

(10:100)*4.8 =

(10*4.8):100 =

48:100 = 0.48

Now we have: 10 percent of 4.8 = 0.48

Question: What is 10 percent of 4.8?

Percentage solution with steps:

Step 1: Our output value is 4.8.

Step 2: We represent the unknown value with $x$.

Step 3: From step 1 above,$4.8=100\%$.

Step 4: Similarly, $x=10\%$.

Step 5: This results in a pair of simple equations:

$4.8=100\%(1)$.

$x=10\%(2)$.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

$\frac{4.8}{x}=\frac{100\%}{10\%}$

Step 7: Again, the reciprocal of both sides gives

$\frac{x}{4.8}=\frac{10}{100}$

$ x=0.48$

A ladder is leaning against a house so that the top of the ladder is 12 feet above the ground. The angle the ladder makes with the ground is 51°. How long is the ladder?

12•sin51°
12/cos51°
12•cos51°
12/sin51°
None of these

Answers

Answer:

12/sin5°

Step-by-step explanation:

This angle can be calculated using the law of sine:

sin(angle)=opposite cathete/hypothenuse

sin(angle)=wall/ladder

In this exercise we want to calculate the length of the hypotenuse (ladder), so the equation is changed afterwards.

sin(angle)=wall/ladder

sin(angle)*ladder=wall

ladder=wall/sin(angle)

Now the given values are used:

ladder=wall/sin(angle)

ladder=12ft/cos(51°)

This is confusing I need help .

Answers

Answer:

x = 54angle ACD = 124°

Step-by-step explanation:

The rule is that the exterior angle (ACD) is equal to the sum of the remote interior angles (the two marked angles on the right).

You are expected to use this relation to write and solve an equation.

  exterior angle = angle D + angle B

  (2x +16) = 58 + (x+12)

  2x +16 = x +70

  x + 16 = 70

  x = 54

Then angle ACD is ...

  angle ACD = (2x +16)° = (2·54 +16)°

  angle ACD = 124°

If B is the midpoint of AC, AB = 8x + 2 and BC = 5x + 14, then what is the length of AB?

Answers

Answer:

The length of AB: 34

Step-by-step explanation:

What are we given?

B = Midpoint of AC

AB = 8x + 2

BC = 5x + 14

|--------------|--------------|

A               B               C

(This is what your line would look like)

Our equation would be:

AB + BC = AC

(8x + 2) = (5x + 14)

(AB)      =        (BC)

(Assuming that our line and points are evenly spread out, we can say that they can equal each other)

8x + 2 = 5x  +14

- 5x- 2 = -5x -2

---------------------

3x = 12

[tex]\frac{3x}{3}=\frac{12}{3}[/tex]

---------------------

x = 4

1) Substitute

(8x + 2) + (5x + 14) = AC

    (AB) + ( BC)       = AC

AB = 8(4) + 2

32 + 2

= 34

BC = 5(4) + 14 =

20 + 14

= 34

(We may be able to assume that since the length of the line is possible the same for AB and BC this is considered correct)

The length of the line segment AB is 34 units.

Given that, B is the midpoint of AC, AB = 8x + 2 and BC = 5x + 14.

What is the midpoint of line segment?

A midpoint of a line segment is the point on a segment that bisects the segment into two congruent segments. The midpoint of a line segment is the point on a segment that is at the same distance or halfway between the two ending points.

Since, B is the midpoint of AC

AB=BC

8x + 2=5x+14

Subtract 5x on both sides of the equation, that is

8x+2-5x=5x+14-5x

⇒ 3x+2 = 14

Transpose 2 to other side of the equation, we get

3x = 14 - 2

⇒ 3x=12

Transpose 3 to other side of the equation, we get

x=4

So, AB=8x+2

=8×4+2

=32+2=34 units

Therefore, the length of the line segment AB is 34 units.

To learn more about the line segment visit:

https://brainly.com/question/25727583.

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Xander needs to collect at least 120 cans for a food drive to earn community service credit. He has already collected 64 items.


Choose the inequality and solution to represent the number of cans, x, that Xander must still collect.

Answers

Answer:

Step-by-step explanation:

x + 64 > = 120 (thats a greater then or equal sign)

x > = 120 - 64

x > = 56...he needs to collect at least 56 more


I really need help with the last one if you could help it would be awesome! Tysm.

Answers

it’s the second one..................

John is 5 years older than Randy. Oscar is twice as old as Randy. How old are each of the three boys is the sum of their ages is 85?​

Answers

Randy: 20 years old John: 25 years old and Oscar is 40 years old

Evidence: (5+x)(x)(2x) = 85
4x +5 = 85
4x = 80
x= 20 which is Randy’s age
20+ 5= 25 which is Johns age
20 • 2 = 40 which is Oscar’s age

Find the distance between the two points in simplest radical form.
(3,9)and (0,2)

Answers

Answer:

7.62

Step-by-step explanation:

use distance formula

___ student(s) for every 8 computers.

45 students for every __ computer(s).

Answers

Answer:

_18__ student(s) for every 8 computers.

45 students for every _20_ computer(s).

Step-by-step explanation:

18 students for every 8 computers 45 students for every 20 computers

BRAINLIEST PLEASEEEE HELP DUE IN 3hrs Can someone help me with this

Answers

Answer:

Step-by-step explanation:

14: k^-3/k^4= 1/k^7

15: answer : 1/3²

16: n^-4

17: f-g^4 = 3-(-5)^4 = -622

18: (x^5-y^2)²+x³ =

(2^5-8^2)²+2³ =1032

19: m²-n³

6²-2³ = 36-8=28

20 : 2²×3²×5³= 4500

4500/10 = 450 islands

An item has a listed price of $70. if the sales tax sales is 8% , how much is the sales tax ( in dollars ) ?

Answers

Answer:

$5.60

Step-by-step explanation:

$70 ⋅ 0.08 = $5.60

(I could be wrong. Sorry if I am. Don't get mad at me)

Hope I help :)

Please consider Brainliest :)

Divide £506 in the ratio 2:4:5

•£92, £184 and £230
•£92, £184 and £240
•£92 , £180, £234

Answers

Answer:

2x+4x+5x=506

11x=506

x=46

92:184:230

what is 698475.50585057 multiplied by three

Answers

Answer:

2,095,426.517

Step-by-step explanation:

From the question above we are required to find the product of 698475.50585057 and 3

Therefore the product can be calculated as follows

698475.50585057 × 3

= 2,095,426.517

Hence 698475.50585057 multiplied by 3 is 2,095,426.517

Write the equation of a line that is perpendicular to y= 3x-2 and that passes through the point (-9,5)

Answers

Answer:

Ans: y = (-1/3)x + 2

Step-by-step explanation:

Perpendicular lines have slopes whose product is -1.  The slope given in

y = 3x - 2

is -3.

The slope of the perpendicular line will be m, and m needs to satisfy the equation

3 * m = -1

Hence m = -1/3.

Our perpendicular line is thus

y = (-1/3)x + b

for some constant b.

We are told that the perpendicular line goes through the point (-9,5).  If so, then the following must hold:

5 = (-1/3)(-9) + b

= 3 + b

b = 2

Ans: y = (-1/3)x + 2

Please HELP!!!!!!!!!
20 POINTS!

Answers

I believe it’s B hope this helps

plz help ASAP matswatch

Answers

Answer:

Step-by-step explanation:

Plz help me quickly
what is the product of 9⋅(−4)⋅(−4)⋅(−7)


A. −1008

B. −252

C. 252

D. 1008

Answers

Answer:

A. -1008

Step-by-step explanation:

9x-4=-36

-36x-4=-144

-144x-7=-1008

Answer:

just go on playstore and search for photomath

[tex]\frac{3}{5} /8[/tex]

Answers

The answer is 0.075 or 3/40

Answer:

[tex]\huge\boxed{\frac{\frac{3}{5}}{8}=\dfrac{3}{40}}[/tex]

Step-by-step explanation:

[tex]\dfrac{a}{b}=a:b\\\\a:b=a\cdot\dfrac{1}{b}\\\\========================\\\\\dfrac{\frac{3}{5}}{8}=\dfrac{3}{5}:8=\dfrac{3}{5}\cdot\dfrac{1}{8}=\dfrac{3\cdot1}{5\cdot8}=\dfrac{3}{40}[/tex]

Please help I’m extremely confused!!!! (Worth 40 points)

Answers

Answer:

0.025

Step-by-step explanation:

Answer:

0.029

Step-by-step explanation:

1 milligram is equivalent to 0.001 grams, so 29*0.001=0.029.

Pls help I’m being timed.

Answers

Answer:

x=5

Step-by-step explanation:

trust me its right

Alonzo earns 8% commission on vacuum cleaner sales. This past month, Alonzo sold 70 units at $150.00 each. How much did Alonzo make in commissions for the past month?

Answers

Answer:

$840

Step-by-step explanation:

First, multiply 70 by $150 to get the total amount the Alonzo earned

70 x 150 = 10,500

Then, multiply 10,500 by 1.08 to find the total amount made with commissions.

10,500 x 11,340

Finally, subtract 10,500 from 11,340 to find the amount of money earned from commissions.

11,340 - 10,500 = 840

Answer:

$840

Step-by-step explanation:

Start by finding the total profit made:

70 • $150 = $10500

Then multiply the total by the commission rate, %8, which is equal to 0.08:

$10500 • 0.08 = $840

The answer is $840

FIND MEASURE 1 AND 3
PLS HELP ME
geometry

Answers

Answer:

1 = 45

3 = 45

Step-by-step explanation:

[tex]\angle {1}[/tex] and [tex]\angle {3}[/tex] is 45 degrees since the unmarked angle is 90 degrees, meaning that BOTH [tex]\angle {1} and \angle {3}[/tex] are equal.

5 less than triple the quotient of a number x and 7

Answers

Answer:

5 less than triple the quotient of a number x and 7 is 3(x ÷ 7) - 5

Quick help!!!!!!!!Consider the polynomial expression below
X^3 -3x^2 +81x-243

Rewrite the polynomial in the form (x-d) (x-e) (x+f) where D is a real number and E and F are complex numbers of the form BI

Answers

x³-3x²+81x-243

x³-3x²+81x-243

Answer : (x-3)(x²+81)

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