TABLE 13-11 A Computer Software Developer Would Like to Use the Number

question 186

True/False

TABLE 13-11
A computer software developer would like to use the number of downloads (in thousands) for the trial version of his new shareware to predict the amount of revenue (in thousands of dollars) he can make on the full version of the new shareware. Following is the output from a simple linear regression along with the residual plot and normal probability plot obtained from a data set of 30 different sharewares that he has developed:



-Referring to Table 13-11, the normality of error assumption appears to have been violated.

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Definitions:

Home Runs

In baseball, a hit that allows the batter to make a complete circuit of the bases and score a run without any errors being committed by the defending team.

National League

One of the two major leagues in professional baseball in the United States, the other being the American League.

Variance

A measure of the dispersion or spread of a set of numbers, calculated as the average of the squared differences from the Mean.

Controlled Collisions

Experiments or tests in which the conditions of a crash or impact are precisely controlled to observe outcomes or test hypotheses.