Question

Use Data Analysis in Excel to conduct the Regression Analysis to reproduce the excel out put...

Use Data Analysis in Excel to conduct the Regression Analysis to reproduce the excel out put below (Note: First enter the data in the next page in an Excel spreadsheet)

Home Sale Price: The table below provides the Excel output of a regression analysis of the relationship between Home sale price(Y) measured in thousand dollars and Square feet area (x):   

SUMMARY OUTPUT

Dependent:

Home Price

($1000)

SUMMARY OUTPUT

Dependent:

Home Price

($1000)

Regression Statistics

Multiple R

0.691

R Square

0.478

Adjusted R Square

0.465

Standard Error

27.21

Observations

80

ANOVA

df

SS

MS

F

Significance F

Regression

2

52378.32252

26189.16126

35.36552756

1.27417E-11

Residual

77

57020.65136

740.5279397

Total

79

109398.9739

Coefficients

Standard Error

t Stat

P-value

Lower 95%

Upper 95%

Intercept

11.581

29.82

0.388

0.698755345

-47.80910537

70.98276434

Size(Sqft)

0.069

0.014

5.56

3.67568E-07

0.044314403

0.093711307

Bathrooms

17.807

7.33

2.42

0.017548601

3.198869475

32.41601103

  1. Conduct a test of significance for the slope, at a significance level of  =.05.
    1. Set up a two-sided test of hypothesis for.
  1. At a significance level of .05, what is the critical t-value for the two-sided test? (hint: determine the degrees of freedom for a linear regression)
  1. The test statistic value for from the Excel output above is?
  1. Based on your answers in (ii) and (iii) determine whether we should accept of reject the null hypothesis H0.
  1. What conclusions can you draw about the significance of from your results? Is square feet area significant in determining Home Price? Number of baths?
  1. Use the 95% confidence interval for   to determine by how much the price of a home can increase if square feet area increases by 1 unit?

Homework Answers

Answer #1

The price of a home can increase $0.04 to $ 0.09 if square feet area increases by 1 unit when no. of bath rooms is kept fix.

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