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The sign of a z-score indicates _________.

A researcher surveys 1000 people and finds that the mean amount spent each week at the grocery store is $96, while the median amount spent is $86. This information is an example of _______.

A chi-square test for goodness of fit is used to examine the distribution of individuals across three categories, and a chi-square test for independence is used to examine the distribution of individuals in a 2-2 matrix of categories.  Which test has the larger value for df?

A population has SS = 100 and s2 = 4.  How many scores are in the population? 

In a two-factor experiment with 2 levels of factor A and 2 levels of factor B, three of the treatment means are essentially identical and one is substantially different from the others.  What result(s) would be produced by this pattern of treatment means?

Which combination of factors is most likely to produce a large value for the F-ratio?

What happens to the critical value for a chi-square test if the size of the sample is increased?

In a two-factor experiment with 2 levels of factor A and 2 levels of factor B, three of the treatment means are essentially identical and one is substantially different from the others.  What result(s) would be produced by this pattern of treatment means?

Which combination of factors is most likely to produce a large value for the F-ratio?

The values in the following matrix are treatment means from a two-factor study. One of the means is missing. What value for the missing mean would most likely result in no main effect for factor B?     B1 B2 A1 10 8 A2 15 ?