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

question 104

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, there appears to be autocorrelation in the residuals.

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Definitions:

External Validity

The ability to extend the outcomes of a research study to different environments and various people.

Internal Validity

Refers to the extent to which a study can establish a causal relationship between its variables, eliminating alternative explanations.

Nomothetic Insights

Generalizations or laws that apply to large numbers of individuals, often used in the context of psychology to identify universal traits or behaviors.

Statistical Tests

Procedures in statistics used to determine whether hypotheses about data sets can be supported or not.