weekend and the scores of each student who took a test the foll listed in the table below. There is a significant negative linear cor el of significance. Therefore, answer the following questions. Hours Spent 0 1 2 3 3 5 5 5 6 7 7 10 Online Test Score (as r² = a percent) 96 85 82 74 95 68 76 84 58 65 75 50 THE 1. What is the least-squares regression line that represents the data? to the tenth. ŷ = 2. What is the value of the coefficient of determination? Round to thre decimals. Unitless X + 3. How much of the variation is... Write the answers in a whole percen Required

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.6: Regression And Median-fit Lines
Problem 22PFA
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Hours Online and Test Scores The number of hours 12 students spent online during
the weekend and the scores of each student who took a test the following Monday
are listed in the table below. There is a significant negative linear correction at the 1%
level of significance. Therefore, answer the following questions.
ŷ
=
Hours
Spent 0 1 2 3 3 5 5 5 6 7 7 10
Online
Test
Score (as
1. What is the least-squares regression line that represents the data? Round the values
to the tenth.
r² =
a
percent)
96 85 82 74 95 68 76 84 58 65 75 50
2. What is the value of the coefficient of determination? Round to three
decimals. Unitless
Explained:
X +
3. How much of the variation is... Write the answers in a whole percent. Units
Required
Unexplained:
Transcribed Image Text:Hours Online and Test Scores The number of hours 12 students spent online during the weekend and the scores of each student who took a test the following Monday are listed in the table below. There is a significant negative linear correction at the 1% level of significance. Therefore, answer the following questions. ŷ = Hours Spent 0 1 2 3 3 5 5 5 6 7 7 10 Online Test Score (as 1. What is the least-squares regression line that represents the data? Round the values to the tenth. r² = a percent) 96 85 82 74 95 68 76 84 58 65 75 50 2. What is the value of the coefficient of determination? Round to three decimals. Unitless Explained: X + 3. How much of the variation is... Write the answers in a whole percent. Units Required Unexplained:
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