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Answer for Question 2, Parts A, B, and C.

Answer for Question 2, Parts A, B, and C.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 23PPS
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Answer for Question 2, Parts A, B, and C.

1) A researcher wants to know whether the number of hours students spent on social networking sites (e.g., Facebook, Instagram) is correlated with how long they study for final exams. The researchers asks 5 students at UCI to report their scores on these two continuous variables: Time on Social Networking Sites Time Spent Studying for Finals (hours) 2 5 7 3 9 (hours) 10 5 4 8 a) Create a scatter diagram for this correlation with Time on Social Networking Sites along the x-axis. b) Describe the pattern of the data points in terms of the strength and direction of the correlation. 2) The researcher now wants to know whether the number of hours students spend on social networking sites predicts how much time they study for final exams: a) Draw a regression line on the scatter diagram reflecting the prediction rule: Y = 10.30.88(X) b) What is the predicted amount of time spent studying if a student spends no time on social networking sites? c) How should the regression coefficient be interpreted?
Transcribed Image Text:1) A researcher wants to know whether the number of hours students spent on social networking sites (e.g., Facebook, Instagram) is correlated with how long they study for final exams. The researchers asks 5 students at UCI to report their scores on these two continuous variables: Time on Social Networking Sites Time Spent Studying for Finals (hours) 2 5 7 3 9 (hours) 10 5 4 8 a) Create a scatter diagram for this correlation with Time on Social Networking Sites along the x-axis. b) Describe the pattern of the data points in terms of the strength and direction of the correlation. 2) The researcher now wants to know whether the number of hours students spend on social networking sites predicts how much time they study for final exams: a) Draw a regression line on the scatter diagram reflecting the prediction rule: Y = 10.30.88(X) b) What is the predicted amount of time spent studying if a student spends no time on social networking sites? c) How should the regression coefficient be interpreted?
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