Question

An educational researcher gathers data from students at an elementary school and observes that there is a negative and linear relationship between the number of hours spent playing video games per week and the number of hours spent working on homework per week. When a regression equation is constructed to predict hours spent working on homework based on hours spent playing video games, it is observed that r² = 45%. This means that r must be equal to approximately

A -0.23.

B None of the answer choices are correct.

C -0.90.

D -0.45.

E -0.67.

Answer 1

Sol: Given data it is observed that r2 = 45°). where p2 - 45/ r2 = 45 100 r2 = 2 0.45 So, ro 0.45 - -0.67 Coption E Elis Correct) rate my a Please rate work of the response is helpful Have Considerations; great day for your STAY SAFE :) Thank you