Week4_Assign - BST 322 Week 4 Assignment Week 4 Assignment...

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BST 322, Week 4 Assignment Week 4 Assignment 1. For each correlation coefficient below, calculate what proportion of variance is shared by the two correlated variables: a. r
b. r
c. r
d.
2. For each coefficient of determination below, calculate the value of the correlation coefficient: a. r 2
b. r 2
c. r 2
d. r 2
3. Suppose a researcher regressed surgical patients’ length of stay (dependent variable) in the hospital on a scale of functional ability measured 24 hours after surgery. Given the following, solve for the value of the intercept constant and write out the full regression equation: Mean length of stay = 6.5days; mean score on scale = 33; slope = -0.10

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