Question: The following table gives information on the incomes in thousands

The following table gives information on the incomes (in thousands of dollars) and charitable contributions (in hundreds of dollars) for the last year for a random sample of 10 households.
a. With income as an independent variable and charitable contributions as a dependent variable, compute SSxx, SSyy, and SSxy.
b. Find the regression of charitable contributions on income.
c. Briefly explain the meaning of the values of a and b.
d. Calculate r and r2 and briefly explain what they mean.
e. Compute the standard deviation of errors.
f. Construct a 99% confidence interval for B.
g. Test at a 1% significance level whether B is positive.
h. Using a 1% significance level, can you conclude that the linear correlation coefficient is different from zero?

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  • CreatedAugust 25, 2015
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