The Ages of a Sample of the Typewriters Used by the Typists

question 20

Multiple Choice

The ages of a sample of the typewriters used by the typists in the typing pool were organized into the following table: What is the sample variance?

• A) About 10.2
• B) About 6.1
• C) About 14.0
• D) About 3.2
• E) None of the choices are correct.

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Definitions:

Kruskal-Wallis Test

A non-parametric method for testing whether samples originate from the same distribution, used as an alternative to the one-way ANOVA when the distribution assumption is violated.

F-test

A statistical test used to compare two variances and determine if they come from populations with equal variances.

Kruskal-Wallis Test

A nonparametric method for testing whether samples originate from the same distribution, used when the assumption of normality in ANOVA is violated.

P-value

The probability of observing test results at least as extreme as the results actually observed, under the assumption that the null hypothesis is true.