Questions from Essentials of Statistics

Q: What value is expected for the F-ratio, on average

What value is expected for the F-ratio, on average, if the null hypothesis is true in an ANOVA? Explain why.

Q: An ANOVA produces an F-ratio with df = 1,

An ANOVA produces an F-ratio with df = 1, 34. Could the data have been analyzed with a t test? What would be the degrees of freedom for the t statistic?

Q: Describe some of the reasons that group means might be different from

Describe some of the reasons that group means might be different from each other in an analysis of variance. Describe some of the reasons that individual scores might be different from each other.

Q: Your instructors, your parents, and your feelings of stress during

Your instructors, your parents, and your feelings of stress during finals week all tell you that cramming is a bad way to prepare for exams. Participants in Kornell’s (2009) research...

Q: Calculate SStotal, SSbetween, and SSwithin for the following set of

Calculate SStotal, SSbetween, and SSwithin for the following set of data:

Q: Calculate SStotal, SSbetween, and SSwithin for the following set of

Calculate SStotal, SSbetween, and SSwithin for the following set of data:

Q: A researcher uses an ANOVA to compare six treatment conditions with a

A researcher uses an ANOVA to compare six treatment conditions with a sample of n = 12 in each treatment. For this analysis, find dftotal, dfbetween, and dfwithin.

Q: A researcher reports an F-ratio with dfbetween = 3 and

A researcher reports an F-ratio with dfbetween = 3 and dfwithin = 40 for an independent-measures ANOVA. a. How many treatment conditions were compared in the experiment? b. How many subjects participa...

Q: The following results are from an independent-measures, two-

The following results are from an independent-measures, two-factor study with n = 4 participants in each treatment condition. Use a two-factor ANOVA with a = .05 to evaluate the main effects and the i...

Q: The following table summarizes the results from a two-factor study

The following table summarizes the results from a two-factor study with two levels of factor A and three levels of factor B using a separate sample of n = 5 participants in each treatment condition. F...