The Sum of the Squared Deviations from the Mean Divided

question 38

Multiple Choice

The sum of the squared deviations from the mean divided by the number of observations minus 1 is called the ____.

• A)range
• B)variance
• C)dispersion
• D)error

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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.