Chapter 15 SAGE Premium Video Quiz
Review with verified answers
The correlation coefficient can range from _____ to _____. - correct answer ✔✔+1, -1
A negative correlation reflects what type of relationship between two variables? - correct answer ✔✔As
one score increases, the other decreases.
A correlation coefficient of +.6 is why type of correlation? - correct answer ✔✔positive
The degrees of freedom (df) for the correlation test is the number of observations minus ____. - correct
answer ✔✔2
Your correlation analysis (r = -.70; n = 15) resulted in a t-value of 3.54. This is a significant correlation.
What is the lowest p-value (level of significance) you should indicate?
df: .10 | .05 | .025 | .01 | .005 | .0005 |
13 | 1.350 | 1.771 | 2.160 | 2.650 | 3.012 | 4.221 |
14 | 1.345 | 1.761 | 2.145 | 2.624 | 2.977 | 4.140
15 | 1.341 | 1.753 | 2.131 | 2.602 | 2.941 | 4.107 - correct answer ✔✔.005
Your correlation was a -.70. What is the coefficient of determination? - correct answer ✔✔.49
Review with verified answers
The correlation coefficient can range from _____ to _____. - correct answer ✔✔+1, -1
A negative correlation reflects what type of relationship between two variables? - correct answer ✔✔As
one score increases, the other decreases.
A correlation coefficient of +.6 is why type of correlation? - correct answer ✔✔positive
The degrees of freedom (df) for the correlation test is the number of observations minus ____. - correct
answer ✔✔2
Your correlation analysis (r = -.70; n = 15) resulted in a t-value of 3.54. This is a significant correlation.
What is the lowest p-value (level of significance) you should indicate?
df: .10 | .05 | .025 | .01 | .005 | .0005 |
13 | 1.350 | 1.771 | 2.160 | 2.650 | 3.012 | 4.221 |
14 | 1.345 | 1.761 | 2.145 | 2.624 | 2.977 | 4.140
15 | 1.341 | 1.753 | 2.131 | 2.602 | 2.941 | 4.107 - correct answer ✔✔.005
Your correlation was a -.70. What is the coefficient of determination? - correct answer ✔✔.49
