In Regression Analysis, If the Coefficient of Correlation Is -1

question 75

Multiple Choice

In regression analysis, if the coefficient of correlation is -1.0, then:

• A)the sum of squares for error is -1.0.
• B)the sum of squares for regression is 1.0.
• C)the sum of squares for error and sum of squares for regression are equal.
• D)the sum of squares for regression and total variation in y are equal.

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Definitions:

Wilcoxon Signed Rank Test

A statistical analysis method void of parametric requirements, designed to assess whether two associated samples, matched pairs, or recurrent measurements on an individual sample exhibit differences in their mean rank in the population.

Rank Sums

A non-parametric statistical measure used to compare the distributions of two independent samples by ranking all observations together and then summing ranks for observations belonging to each sample.

Standardized Test Statistic

A calculated value used to determine the relative distance of a data point or sample from the mean of a population, expressed in terms of the standard deviation of the population.

Positive Differences

The result obtained when subtracting a smaller number from a larger number in each pair of a data set.