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2 years ago

If we assume that the conditions for correlation are met, which of the following are true? If false, explain briefly.

Mathematics

1 answer:

Leya [2.2K]2 years ago

5 0

Answer:

A. False,

B. False,

C. True.

Step-by-step explanation:

We have been given three statements about the correlation. We are asked to determine which of the given statement are true.

(A) A correlation of 0.02 indicates a strong positive association.

We know that a correlation coefficient close to 1 represents positive association and a correlation coefficient close to 0 represents negative association.

Since our given correlation coefficient is close to 0, therefore, it represents negative association and given statement is false.

(B) Standardizing the variable will make the correlation 0.

We know that standardizing the variable does not change the correlation.

If correlation between the variables was 0, then the correlation between standardized variables also will be 0. Therefore, the given statement is false.

(C) Adding an outlier can dramatically change the correlation.

We know that correlation is strongly influenced by outliers, therefore, the given statement is false.

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What is the MAD of the data set? {13, 6, 3, 7, 11} Enter your answer in the box.

frosja888 [35]

13 + 6 + 3 + 7 + 11 = 40
;
40 ÷ 5 = 8
;
13 - 8 = 5
6 - 8 = |-2| = 2
3 - 8 = |-5| = 5
7 - 8 = |-1| = 1
11 - 8 = 3
;
5, 2, 5, 1, 3
5 + 2 + 5 + 1 + 3 = 16
16 ÷ 5 = 3.2
;
Mean Absolute Deviation is 3.2.

Hope this helped☺☺

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2 years ago

16 oz of trail mix costs $3.20. What is the cost per ounce? *

Rzqust [24]

Answer: .20 cents

Step-by-step explanation:

3.20/16=0.20

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2 years ago

Read 2 more answers

-6(2r +8)=-10(r-3) I need the work to

barxatty [35]

Answer:

r = -39

Step-by-step explanation:

So we are trying to solve the equation for r.

-6(2r + 8) = -10(r - 3)

Divide both sides by -2. (This will make distributing much easier.)

3(2r + 8) = 5(r - 3)

Distribute the 3 on the left side and the 5 on the right side,

6r + 24 = 5r - 15

Subtract 24 from both sides.

6r = 5r - 39

Subtract 5r from both sides.

r = -39

So now we have solve the equation.

I hope you find my answer and explanation to be helpful. Happy studying. :)

5 0

2 years ago

Each square on the grid is 1 unit by 1 unit. You want to walk from point A to point B via a path that is 7 units long, but you h

Effectus [21]

Answer:

If you are traversing squares then 7 different paths can be taken

If you are traversing edges then 36 different paths can be taken

Step-by-step explanation:

I have attached a picture that would describe the grid which is 7 units long.

The solution to the general problem is if you have to take X right steps, and Y down steps then the number of routes is simply the ways of choosing where to take the down (or right) steps. Such that:

$\left (\ {X+Y} \atop {X}} \right.\left)=\left (\ {X+Y} \atop {Y}} \right.\left)$

Basically its the combination of terms.

In this problem,

If you are traversing squares then there are 6 right steps and 1 down step,

7 C 1 = 7 C 6= 7

If you are traversing edges then there are 7 right steps and 2 down steps:

9 C 2 = 9 C 7= 36

3 0

2 years ago

Solve 4x - 5 = 7 + 4y for y

Mandarinka [93]

Answer:

Step-by-step explanation:

4x - 5 = 7 + 4y subtract 7 from both sides

4x - 5 - 7 = 7 - 7 + 4y

4x - 12 = 4y divide both sides by 4

4x/4 - 12/4 = 4y/4

x - 3 = y

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2 years ago