WorksheetsStats 11.6 ANOVA
Total questions: 10
Worksheet time: 9mins
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.
μ2 & μ3 are not the same
μ1 = μ2 = μ3
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
Compute the F critical value for α =1%, N = 24 and k = 3
2.246
4.718
5.781
2.575
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.
The dfB = 4 and dfW = 20. What would be the total N for an ANOVA?
19
20
24
25
