ANOVA & t-Tests

ANOVA is used to compare the differences in _________ for more than 2 populations

• variances

• means

• regression

With p-value approach, the H₀ will rejected if p-value is ________ than α

• ≤

• ≥

• <

ANOVA stands for ...

• Analysis of Variation

• Analysis of Variance

• Analysis of Variability

• A Non-Visual Analysis

ANOVA testing is used for ...

• Test for one mean

• Test for two means

• Test for three or more means

• Test for independence between two variables

A large sample F-ratio (F test statistic) is likely to lead us to ____ in an ANOVA test.

• reject Ho

• not reject Ho

• reject Ha

• not reject Ha

Identify the appropriate statistical test to see if there is a difference in the mean salaries.

• t-test for one mean

• t-test for two means

• chi-square test of independence of two variables

• F-test for an ANOVA

Formulate the alternative hypothesis.

• At least one mean is different

Compute the F-ratio (test statistic) when MSB = 391.2 and MSW = 174.1714

• 391.2

• 3.4668

• 2.246

• 0.1306

The correct decision is ...

• reject Ho

• fail to reject Ho

• reject H1

• fail to reject H1

The correct conclusion is ...

• There are significant differences in mean salaries among the 3 majors.

• There are no significant differences in mean salaries among the 3 majors.

• We need to do a chi-square test to find the differences.

• We need to do a Bonferroni test to find the differences.

Tags

CCSS.HSS.IC.B.4