Question

Suppose Consumer Reports would like to investigate the linear relationship between the battery life, in hours, and the screen size, in diagonal inches, of a laptop computer. The following table shows a random sample of eight laptops and the battery life and corresponding screen size of each. These data can also be found in the Excel file battery life. xlsx.
a. Construct a scatter plot for these data.
b. Calculate the slope and the y intercept for the regression equation.
c. Provide an interpretation for the value of the slope.
d. Predict the battery life for a laptop with a 14.5 in. screen size.
e. Calculate the SST.
f. Partition the SST into the SSR and SSE.


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  • CreatedJuly 29, 2015
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