Assume that you are interested in whether or not expenditures per pupil are related to the average performance of pupils on a standardized basic skills examination. expenditures per pupilaverage performance 70110 150190 220180 170200 90150 100130 120160 150180 110150 170210 190220 SUMMARY OUTPUT Regression Statistics Multiple R0,84 R Square0,71 Adjusted R Square0,68 Standard Error19,28 Observations11 CoefficientsStandard Errort StatP-valueLower 95%Upper 95%Intercept83,0819,434,280,0039,12127,04expenditures per pupil0,630,134,740,000,330,93 Which variable is the independent variable? Which variable is the dependent variable?What is the sample size?Create a scatter plot for the data. Do you think there is a linear relationship between the two variables?What is the equation of the least-squares regression line?Use the regression equation to predict the average performance for X = 100.

According to guidelines we solve first three subparts when given multiple subparts.

Answered: Assume that you are interested in…

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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Question

Assume that you are interested in whether or not expenditures per pupil are related to the average performance of pupils on a standardized basic skills examination.

expenditures per pupil	average performance
70	110
150	190
220	180
170	200
90	150
100	130
120	160
150	180
110	150
170	210
190	220

SUMMARY OUTPUT

Regression Statistics
Multiple R	0,84
R Square	0,71
Adjusted R Square	0,68
Standard Error	19,28
Observations	11

	Coefficients	Standard Error	t Stat	P-value	Lower 95%	Upper 95%
Intercept	83,08	19,43	4,28	0,00	39,12	127,04
expenditures per pupil	0,63	0,13	4,74	0,00	0,33	0,93

Which variable is the independent variable? Which variable is the dependent variable?
What is the sample size?
Create a scatter plot for the data. Do you think there is a linear relationship between the two variables?
What is the equation of the least-squares regression line?
Use the regression equation to predict the average performance for X = 100.

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Create a scatter plot for the data. Do you think there is a linear relationship between the two variables?
What is the equation of the least-squares regression line?
Use the regression equation to predict the average performance for X = 100.

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Follow-up Question

Create a scatter plot for the data. Do you think there is a linear relationship between the two variables?
What is the equation of the least-squares regression line?
Use the regression equation to predict the average performance for X = 100.

Solution

by Bartleby Expert

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