A Data Set of Size 21 Has Correlation Coefficient of R

question 49

Multiple Choice

A data set of size 21 has correlation coefficient of r = 0.476. Test the significance of r at the 5%
Level and at the 1% level.

• A)r is significant at 5%, but not at 1%.
• B)r is not significant at 5% or at 1%.
• C)r is significant at 5% and at 1%.

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Definitions:

Sales Data

Information collected about sales transactions, including volume, value, trends, and customer preferences.

Advertising Data

Data related to marketing and promotional activities, often used to evaluate the effectiveness of advertising campaigns.

F Statistic

A value used in statistical analysis to determine the ratio of variance between groups relative to variance within groups.

Regression Analysis

A statistical technique that models the association between a dependent variable and one or more independent variables.