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  

A totally fictitious researcher wants to test whether there is a significant relationship between number of shih tzus owned and happiness. After analyzing the data on a sample of 50, she determines that r = 0.34. What is her calculated t score?

In regression, what is the error term?

My computer camera is turned on.

The Hardy-Weinberg equation can be used to: