In Chapter 16, We Presented the Data from an Independent

question 27

Multiple Choice

In Chapter 16, we presented the data from an independent groups design and asked if it was appropriate to use parametric ANOVA. The data are presented again below. The correct answer was that it was not appropriate to use parametric ANOVA because of unequal n s and homogeneity of variance assumption violation. Instead, analyze the data with the Kruskal-Wallis test. Using a = 0.05, H crit = _________.

• A) 3.841
• B) 7.815
• C) 5.991
• D) 7.824

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Definitions:

Chi-squared Distribution

A distribution used in statistics to test hypotheses about the frequency distribution of observed data compared to the expected distribution if the null hypothesis is true.

Alternative Hypothesis

A statement that contradicts the null hypothesis and is considered true if the null hypothesis is rejected based on statistical evidence.

Proportions

Fractions or percentages that represent part of a whole or a ratio of one quantity to another.

Proportions

Ratios that compare the part of a whole to the whole itself, often expressed in terms of a fraction or percentage.