12. A supermarket chain performed a survey to help determine desirable locations for new stores. The management of the chain wanted to know whether a linear relationship exists between weekly take-home pay and weekly food expenditures. A random sample of 8 households produced the data shown in the accompanying table. Family 1 2 3 4 5 6 7 8 Your answer Weekly Take-Home Pay 300 200 270 180 250 360 225 340 Your answer Weekly Food Expenditures 160 110 a. Using a scatter plot, does there seem to be a linear relationship between weekly take-home pay and weekly food expenditures? b. Compute the correlation coefficient and INTERPRET. * 150 90 130 200 120 180 c. What is a reasonable choice for the dependent and independent variables. Why? S .S
12. A supermarket chain performed a survey to help determine desirable locations for new stores. The management of the chain wanted to know whether a linear relationship exists between weekly take-home pay and weekly food expenditures. A random sample of 8 households produced the data shown in the accompanying table. Family 1 2 3 4 5 6 7 8 Your answer Weekly Take-Home Pay 300 200 270 180 250 360 225 340 Your answer Weekly Food Expenditures 160 110 a. Using a scatter plot, does there seem to be a linear relationship between weekly take-home pay and weekly food expenditures? b. Compute the correlation coefficient and INTERPRET. * 150 90 130 200 120 180 c. What is a reasonable choice for the dependent and independent variables. Why? S .S
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 8PPS
Related questions
Question
IMPORTANT NOTE:
You may use excel to answer. Final computed values should be ROUNDED OFF TO THREE DECIMAL
Transcribed Image Text:Find the equation of the regression line.
d. What is the value of the intercept? *
Your answer
e. What is the value of b1? *
Your answer
f. Write the equation in the stylized form. *
Your answer
g. Interpret the coefficients of the estimated regression line. *
Your answer
h. What is the R-square of the model? Interpret. *
Your answer
t
t
IS
is
Transcribed Image Text:12. A supermarket chain performed a survey to help determine desirable locations
for new stores. The management of the chain wanted to know whether a linear
relationship exists between weekly take-home pay and weekly food expenditures. A
random sample of 8 households produced the data shown in the accompanying
table.
Family
1
2
3
4
5
6
7
8
Your answer
Weekly Take-Home Pay
300
200
Your answer
270
180
250
360
225
340
a. Using a scatter plot, does there seem to be a linear relationship
between weekly take-home pay and weekly food expenditures?
Weekly Food Expenditures
160
110
150
90
130
b. Compute the correlation coefficient and INTERPRET. *
Your answer
200
120
180
c. What is a reasonable choice for the dependent and independent
variables. Why?
.S
.S
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