Question 8 .If the total sum of squares is 6058, the residual sum of squares is 163. What is the value of r2? Question 9 How would you interpret your result above (the value determined for r2?
Question 8 .If the total sum of squares is 6058, the residual sum of squares is 163. What is the value of r2? Question 9 How would you interpret your result above (the value determined for r2?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 2AGP
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It is argued that less time spent on social media will result in improved course marks among ECO242 students. To test whether this is the case you collect data from 20 students on their final marks (Y) and number of Instagram posts during the semester (X). You make the following calculations:∑XY=32191
∑X2=34282 ∑X=690 ∑Y=1164 Next, you run the following regression:marks=β^1+β^2Instagram
where 'marks' is the final mark for the course in percentage points, and 'Instagram' is the average number of minutes per day spent on the Instagram App during the semester. Answer the remaining questions based on your results.Question 1
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