Based on the following scores of X and Y, calculate the Pearson correlation. X Y 60 6 40 3 25 2 30 3 20 1 a. r = 0.50 b. r = 0.97 c. r = 0.00 d. r = 0.94
Based on the following scores of X and Y, calculate the Pearson correlation. X Y 60 6 40 3 25 2 30 3 20 1 a. r = 0.50 b. r = 0.97 c. r = 0.00 d. r = 0.94
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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Question
Based on the following scores of X and Y, calculate the Pearson
|
X |
Y |
|
60 |
6 |
|
40 |
3 |
|
25 |
2 |
|
30 |
3 |
|
20 |
1 |
- a. r = 0.50
- b. r = 0.97
- c. r = 0.00
- d. r = 0.94
Based on a two-tailed t-test, what will be the conclusion of the significance test for this correlation be?
|
X |
Y |
|
60 |
6 |
|
40 |
3 |
|
25 |
2 |
|
30 |
3 |
|
20 |
1 |
a. Reject the null hypothesis with α = .05 and α = .01.
b. Reject the null hypothesis with α = .01 but not with α = .05.
c. Reject the null hypothesis with α = .05 but not with α = .01.
d. Fail to reject the null hypothesis with α = .05 and α = .01.
A researcher wants to know if there is a relationship between gender and the likelihood of being a psychology major. A sample of n=200 participants is surveyed and the observed results are presented in the table below.
|
|
Male |
Female |
|
Yes |
20 |
70 |
|
No |
80 |
30 |
Which of the following lists the appropriate statistical analysis for this question and data?
a. independent-samples t-test
b. repeated-measures t-test
c. Chi-square test
d. ANOVA
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