Exam 10: Hypothesis Testing III: the Analysis of Variance

A researcher is analyzing regional differences in family size.She has information on number of children for samples of families from four regions.Which of the following would be an appropriate statistical test?

In the ANOVA test,what assumption must be made with regard to the population variances?

For ANOVA,we construct two estimates of the population variance.These are called

The population variance is a measure of

In the ANOVA test,if the null hypothesis is true,then

The F ratio is a ratio of ____ to ____.

In an ANOVA test,if MSB is significantly ____ than the MSW,we will ____.

The text reported the results of a test of frequency of sexual activity by marital status.The null hypothesis was rejected which means that

With the ANOVA test,the ____ the difference between categories,relative to the differences within,the ____ likely that the null hypothesis will be rejected

To construct estimates of the population variance,we divide each sum of squares by its respective

A researcher has analyzed differences in average College Board scores for random samples of students from four different colleges.The obtained F score is 0.45.What can be concluded about the null hypothesis?

The ANOVA test is most appropriate for dependent variables that are

One limitation of the ANOVA test is that it requires

Very large random samples of Catholics,Protestants,and people with no religious affiliation have been questioned about their opinions on capital punishment.On a ten point scale,the Protestants average 6.8,the Catholics averaged 7.0,and the "Nones" averaged 7.1.These differences were tested by ANOVA and found to be statistically significant.What is the most reasonable conclusion?

In the ANOVA test,the symbol 'dfw' refers to

In an ANOVA test,when the null hypothesis is rejected,we know that at least one of the means is significantly different from the others.In order to find out which mean(s)are significantly different,we must conduct a

ANOVA is appropriate for situations in which

ANOVA is a one-tailed test and we are concerned only with those outcomes in which there is more variance

Stated generally,the null hypothesis for the ANOVA test is

If we reject the null hypothesis in a test using analysis of variance,we are concluding that