b C d. e. 2XY= f. Calculate Pearson's correlation coefficient. 9 . Interpret r: Include type and strength of the relationship. h . Calculate the coefficient of determination i. What percent of the variability in the number of correct answers is accounted for by the number of hours slept? j. What percent of the variability in the number of correct answers is unaccounted for by the number of hours slept? k. What is the criterion variable? I. What is the predictor variable? m . Calculate the slope b= n . Calculate the yintercept a= 0. Write the regression equation. [3 . Predict the number of correct answers for a student who slept 7 hours. q . Calculate the standard error of the estimate and interpret