e following data represents students' measured level of grumpiness (Y) and their ore on a measure of junk food consumption (X) for 10 sampled students: Junk Food (X) Grumpiness (Y) X-X Y-Y (X-X) (Y-Y) 7 6 6 4 9 9 4 1 6 7 1 3 1 2 4 3 1 4 3 5 4.20 4.40 2.78 2.41 Mean Std. dev. Complete the missing cells in the table and use this to compute the covariance between junk food consumption and grumpiness. CoVxy = Sum= Use the information provided and your covariance above to compute the correlation between junk food consumption and grumpiness. Is this correlation significant? (Circle one; use a non-directional test) Y N r df = In one sentence APA formatted, state your conclusion about the relationship between junk food consumption and grumpiness. rcrit =
e following data represents students' measured level of grumpiness (Y) and their ore on a measure of junk food consumption (X) for 10 sampled students: Junk Food (X) Grumpiness (Y) X-X Y-Y (X-X) (Y-Y) 7 6 6 4 9 9 4 1 6 7 1 3 1 2 4 3 1 4 3 5 4.20 4.40 2.78 2.41 Mean Std. dev. Complete the missing cells in the table and use this to compute the covariance between junk food consumption and grumpiness. CoVxy = Sum= Use the information provided and your covariance above to compute the correlation between junk food consumption and grumpiness. Is this correlation significant? (Circle one; use a non-directional test) Y N r df = In one sentence APA formatted, state your conclusion about the relationship between junk food consumption and grumpiness. rcrit =
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![The following table represents students' measured level of grumpiness (Y) and their score on a measure of junk food consumption (X) for 10 sampled students:
| Junk Food (X) | Grumpiness (Y) | \(X - \bar{X}\) | \(Y - \bar{Y}\) | \((X - \bar{X}) \times (Y - \bar{Y})\) |
|---------------|----------------|-----------------|-----------------|---------------------------------------|
| 7 | 6 | | | |
| 6 | 4 | | | |
| 9 | 9 | | | |
| 1 | 1 | | | |
| 6 | 7 | | | |
| 3 | 3 | | | |
| 2 | 3 | | | |
| 1 | 2 | | | |
| 4 | 3 | | | |
| 3 | 5 | | | |
Mean:
- Junk Food (X): 4.20
- Grumpiness (Y): 4.40
Standard Deviation:
- Junk Food (X): 2.78
- Grumpiness (Y): 2.41
Sum:
- \((X - \bar{X}) \times (Y - \bar{Y})\) =
1. Complete the missing cells in the table and use this to compute the covariance between junk food consumption and grumpiness.
\[ \text{CoV}_{xy} = \]
2. Use the information provided and your covariance above to compute the correlation between junk food consumption and grumpiness.
\[ r = \]
3. Is this correlation significant? (Circle one; use a non-directional test)
\[ Y \quad N \]
\[ df = \]
\[ r_{crit} = \]
4. In one sentence APA formatted, state your conclusion about the relationship between junk food consumption and grumpiness.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F29ce3a4c-cb07-4c4c-bb91-a57b2d1f76d3%2Fa861895b-a2f8-4fae-97b8-edfa2e0b8291%2F84yd4en_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The following table represents students' measured level of grumpiness (Y) and their score on a measure of junk food consumption (X) for 10 sampled students:
| Junk Food (X) | Grumpiness (Y) | \(X - \bar{X}\) | \(Y - \bar{Y}\) | \((X - \bar{X}) \times (Y - \bar{Y})\) |
|---------------|----------------|-----------------|-----------------|---------------------------------------|
| 7 | 6 | | | |
| 6 | 4 | | | |
| 9 | 9 | | | |
| 1 | 1 | | | |
| 6 | 7 | | | |
| 3 | 3 | | | |
| 2 | 3 | | | |
| 1 | 2 | | | |
| 4 | 3 | | | |
| 3 | 5 | | | |
Mean:
- Junk Food (X): 4.20
- Grumpiness (Y): 4.40
Standard Deviation:
- Junk Food (X): 2.78
- Grumpiness (Y): 2.41
Sum:
- \((X - \bar{X}) \times (Y - \bar{Y})\) =
1. Complete the missing cells in the table and use this to compute the covariance between junk food consumption and grumpiness.
\[ \text{CoV}_{xy} = \]
2. Use the information provided and your covariance above to compute the correlation between junk food consumption and grumpiness.
\[ r = \]
3. Is this correlation significant? (Circle one; use a non-directional test)
\[ Y \quad N \]
\[ df = \]
\[ r_{crit} = \]
4. In one sentence APA formatted, state your conclusion about the relationship between junk food consumption and grumpiness.
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