Author Question: A correlation of r = -0.90 means that there is essentially no consistent relationship between X and ... (Read 174 times)

Zulu123 · **on:** Jun 19, 2018

A correlation of r = -0.90 means that there is essentially no consistent relationship between X and Y.

a. True
b. False
Indicate whether the statement is true or false

Question 2

The fundamental threat to internal validity in the regression-discontinuity design is selection.

a. True
b. False
Indicate whether the statement is true or false