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MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Wedding Cost
Attendance
61700
300
53000
350
45000
150
41000
200
35000
250
32500
150
30000
250
30000
300
29000
250
27000
200
25000
150
200
0000
23000
200
22000
22000
200
200
22000
200
21000
100
21000
150
20000
200
18000
150
100
0000
100
13000
150
7000
50
4000
50.
Wedding Cost
Attendance
Transcribed Image Text:Wedding Cost Attendance 61700 300 53000 350 45000 150 41000 200 35000 250 32500 150 30000 250 30000 300 29000 250 27000 200 25000 150 200 0000 23000 200 22000 22000 200 200 22000 200 21000 100 21000 150 20000 200 18000 150 100 0000 100 13000 150 7000 50 4000 50. Wedding Cost Attendance
Use the Regression tool on the accompanying wedding data, using the wedding cost as the dependent variable and attendance as the independent variable. Complete parts a through c.
E Click the icon to view the wedding data.
OB. The slope indicates that for each increase of 1 in wedding cost, the predicted attendance is estimated to increase by a value equal to b,
C. It is not appropriate to interpret the slope because it is outside the range of observed wedding costs.
X
D. It is not appropriate to interpret the slope because it is outside the range of observed attendances.
Interpret the Y-intercept of the regression equation. Choose the correct answer below.
OA. It is not appropriate to interpret the Y-intercept because it is outside the range of observed wedding costs.
B. It is not appropriate too interpret the Y-intercept because it is outside the range of observed attendances.
O C. The Y-intercept indicates that a wedding with a cost of $0 has a mean predicted attendance of bo people.
O D. The Y-intercept indicates that a wedding with an attendance of 0 people has a mean predicted cost of $bo.
Identify and interpret the meaning of the coefficient of determination in this problem. Select the correct choice below and fill in the answer box to complete your choice.
(Round to three decimal places as needed.)
O A. The coefficient of determination is R² =
This value is the proportion of variation in attendance that is explained by the variation in wedding cost.
B. The coefficient of determination is R
This value is the proportion of variation in wedding cost that is explained by the variation in attendance.
%3D
C. The coefficient of determination is R² =
This value is the probability that the correlation between the variables is statistically significant.
O D. The coefficient of determination is
R?
This value is the probability that the slope of the regression line is statistically significant.
%3D
an oliol Chock Answer
Transcribed Image Text:Use the Regression tool on the accompanying wedding data, using the wedding cost as the dependent variable and attendance as the independent variable. Complete parts a through c. E Click the icon to view the wedding data. OB. The slope indicates that for each increase of 1 in wedding cost, the predicted attendance is estimated to increase by a value equal to b, C. It is not appropriate to interpret the slope because it is outside the range of observed wedding costs. X D. It is not appropriate to interpret the slope because it is outside the range of observed attendances. Interpret the Y-intercept of the regression equation. Choose the correct answer below. OA. It is not appropriate to interpret the Y-intercept because it is outside the range of observed wedding costs. B. It is not appropriate too interpret the Y-intercept because it is outside the range of observed attendances. O C. The Y-intercept indicates that a wedding with a cost of $0 has a mean predicted attendance of bo people. O D. The Y-intercept indicates that a wedding with an attendance of 0 people has a mean predicted cost of $bo. Identify and interpret the meaning of the coefficient of determination in this problem. Select the correct choice below and fill in the answer box to complete your choice. (Round to three decimal places as needed.) O A. The coefficient of determination is R² = This value is the proportion of variation in attendance that is explained by the variation in wedding cost. B. The coefficient of determination is R This value is the proportion of variation in wedding cost that is explained by the variation in attendance. %3D C. The coefficient of determination is R² = This value is the probability that the correlation between the variables is statistically significant. O D. The coefficient of determination is R? This value is the probability that the slope of the regression line is statistically significant. %3D an oliol Chock Answer
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