Exam 16: Analysis of Variance and Covariance

The most commonly used measure in ANOVA indicating the relative importance of factors is omega squared, (ω²).

________ is an ANOVA technique for examining the difference in the central tendencies of more than two groups when the dependent variable is measured on an ordinal scale.

________ are used to examine differences among two or more means of the treatment groups.

________ is an ANOVA technique used when respondents are exposed to more than one treatment condition and repeated measurements are obtained.

The last step in the procedure for conducting one-way analysis of variance is to test the significance.

Repeated measures analysis of variance may be thought of as an extension of the ________ to the case of more than two related samples.

ANOVA and ANCOVA include one independent variable and t tests include more than one independent variable.

Which statement is correct if the null hypothesis for a one-way ANOVA is rejected?

Which of the statistical techniques below does not involve a metric independent variable (Figure 16.1 in the text)?

Categorical independent variables are ________.The independent variables must all be categorical (nonmetric)to use ________.

In ANOVA the relative contribution of a factor X is calculated as ________.

Analysis of variance is so named because it examines the variability or variation in the sample (dependent variable)and,based on the variability,determines whether there is reason to believe that the population means differ.

Contrasts are used in ANOVA to determine which of the means are statistically different.

Interactions occur when the effects of one factor on the dependent variable depend on the level (category)of the other factors.

Important issues involved in the interpretation of ANOVA results include all of the following except ________.

The strength of the effects of X (independent variable or factor)on Y (dependent variable)is measured by ________.

How consumers' intentions to buy a brand vary with different levels of price and different levels of distribution is best analyzed via ________.

________ are contrasts that enable the researcher to construct generalized confidence intervals that can be used to make pairwise comparisons of all treatment means.

The strength of the joint effect of two (or more)factors or the overall effect is known as ________.

Modest departures from the assumptions in analysis of variance do not seriously affect the validity of the analysis.