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
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
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 2ECP
Related questions
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 |
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70 |
110 |
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150 |
190 |
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220 |
180 |
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170 |
200 |
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90 |
150 |
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100 |
130 |
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120 |
160 |
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150 |
180 |
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110 |
150 |
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170 |
210 |
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190 |
220 |
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SUMMARY OUTPUT |
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Regression Statistics |
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Multiple R |
0,84 |
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R Square |
0,71 |
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Adjusted R Square |
0,68 |
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Standard Error |
19,28 |
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Observations |
11 |
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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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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
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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