Which of the following is a nonparametric test of association?

A researcher finds a correlation between high school detentions and college GPA of r = -0.18. Which of the following statements best characterizes his results?

Which of the following is the correct interpretation of the slope for ethnic heterogeneity?

A researcher wants to know if there is a significant relationship between job experience and job stress. From a sample of 10 correctional officers, she collects data on the number of years of work experience and job stress measured on a scaled ranging from 0 to 10. 

Below is a diagram representing an OLS regression with two predictors, X1 and X2.  Which of the following represents the proportion of variance in Y NOT explained by X1 and X2?

How is the regression line calculated?

Below is a diagram representing an OLS regression with two predictors, X1 and X2.  What does A + D represent?

Which condition must be satisfied for chi-square to be valid?

Is there a sex difference in running red lights? A researcher recorded traffic violations and driver sex in the table below. What is the expected frequency of female drivers who run yellow lights? 

Which of the following has r = 0.5