The following data represent a list of the top 7 selling books. The number of co
ID: 3158796 • Letter: T
Question
The following data represent a list of the top 7 selling books. The number of copies sold and how many pages are in the book are listed below:
Number of Copies Sold (In Millions) Pages
150 1008
140.6 300
140 128
107 309
100 272
100 329
100 317
g. Find the coefficient of determination.
h. Find the correlation coefficient.
i. Find s^2
j. Find the test statistic for testing if b1 is significant or not.
k. What conclusion would you make based on the test statistic found
Explanation / Answer
The summary of the regression output is as follows
From the regression output
g) Coefficient of determination R2 = 0.203482
h) The correlation Coefficient is r = 0.45109
i) S2 = 278.69392 =77670.2899
j) the test statistic is t=1.130188
k) since the p-valoe is 0.309679 > 0,05( significance level) we can conclude that b1 is not significant
SUMMARY OUTPUT Regression Statistics Multiple R 0.45109 R Square 0.203482 Adjusted R Square 0.044179 Standard Error 278.6939 Observations 7 ANOVA df SS MS F Significance F Regression 1 99210.21 99210.21 1.277325 0.309678915 Residual 5 388351.5 77670.3 Total 6 487561.7 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept -297.306 608.8463 -0.48831 0.645991 -1862.394754 1267.78366 N 5.663967 5.011527 1.130188 0.309679 -7.218571932 18.54650609Related Questions
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