The Results of a Two-Factor Analysis of Variance Produce Df

question 16

Multiple Choice

The results of a two-factor analysis of variance produce df = 1, 30 for the F-ratio for factor A, and df = 2, 30 for the F-ratio for the AxB interaction.Based on this information, how many levels of factor B were compared in the study?

• A)1
• B)2
• C)3
• D)cannot be determined without additional information

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Definitions:

Normal Populations

Refers to populations that follow a bell-shaped distribution curve, indicating a normal distribution of data.

Variance

A measure of variability that indicates the average squared deviation of each number from the mean of a data set, showing how spread out the data points are.

Significance Level

The threshold below which the p-value of test results must fall for the results to be considered statistically significant, typically denoted by alpha (α).

Normal Populations

Populations that follow a normal distribution, characterized by symmetrical bell-shaped curves where mean, median, and mode are equal.