Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
Statistics 305 Exam Questions and
Answers
The independent variable is also called the ---> - ANSWER✔✔-Factor or treatment variable
Factorial designs involve more than one _____ with two ore more _____. - ANSWER✔✔-Factorial
designs involve more than one IV with two or more levels.
how many groups are required in a One-way Anova? - ANSWER✔✔-Two groups or more.
Why not just test all the possible differences of a one way design with t test? - ANSWER✔✔-This would
lead to an inflated experiment wise type I error rate (i.e. rejection of a true null hypothesis)
Two types of tests in ANOVA? - ANSWER✔✔-Omnibus F tests
Post hoc test to look at pairs of groups
What are two things which are provided to us by performing post hoc tests? - ANSWER✔✔-1. Post hoc
tests give us better type I error control
2. You only interpret the post hoc test if the overall F test is significant.
_______ assesses the relative magnitude of different parts of variance. - ANSWER✔✔-ANOVA
Define the MSM --> - ANSWER✔✔-Mean squared of the model. This is variance which is found between
groups that is due to the independent variable or different treatments/levels of a factor
What is the other name for the variance within groups? - ANSWER✔✔-MSR
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If the group means tend to differ from each other what happens to MSM? - ANSWER✔✔-MSM tends to
be large in comparison to MSR ---> in turn when the group means differ from each other the F ration
tends to be large.
The most common form of graph is _____ for and F distribution? - ANSWER✔✔-Right skewed
distribution
If your F value is larger than F crit you may _____ the null hypothesis. - ANSWER✔✔-Reject.
If the p value is less than 0.05 you may _____ the null hypothesis. - ANSWER✔✔-Reject
With only two groups either a ____ test or an F tests can be used for testing for significance between
means. - ANSWER✔✔-t test!
When there are only two groups both F tests and t tests lead to the same conclusion T/F. - ANSWER✔✔-
T
When group number is 2, F = ____ - ANSWER✔✔-F = t^2 when there are two groups.
In one way anova, SST is partitioned into SSM and SSR. Where does it go from there? - ANSWER✔✔-SSM
will lead to MSM
SSR will lead to MSR
F = MSM/MSR
SST = _____ + ______ - ANSWER✔✔-SST = SSM + SSR
SSM = Variation ___________ - ANSWER✔✔-SSM = variation between the sample means (across the
levels of IV)
Copyright ©Stuvia International BV 2010-2024 Page 2/12
Statistics 305 Exam Questions and
Answers
The independent variable is also called the ---> - ANSWER✔✔-Factor or treatment variable
Factorial designs involve more than one _____ with two ore more _____. - ANSWER✔✔-Factorial
designs involve more than one IV with two or more levels.
how many groups are required in a One-way Anova? - ANSWER✔✔-Two groups or more.
Why not just test all the possible differences of a one way design with t test? - ANSWER✔✔-This would
lead to an inflated experiment wise type I error rate (i.e. rejection of a true null hypothesis)
Two types of tests in ANOVA? - ANSWER✔✔-Omnibus F tests
Post hoc test to look at pairs of groups
What are two things which are provided to us by performing post hoc tests? - ANSWER✔✔-1. Post hoc
tests give us better type I error control
2. You only interpret the post hoc test if the overall F test is significant.
_______ assesses the relative magnitude of different parts of variance. - ANSWER✔✔-ANOVA
Define the MSM --> - ANSWER✔✔-Mean squared of the model. This is variance which is found between
groups that is due to the independent variable or different treatments/levels of a factor
What is the other name for the variance within groups? - ANSWER✔✔-MSR
Copyright ©Stuvia International BV 2010-2024 Page 1/12
, Copyright © KAYLIN 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH NOVEMBER, 2024
If the group means tend to differ from each other what happens to MSM? - ANSWER✔✔-MSM tends to
be large in comparison to MSR ---> in turn when the group means differ from each other the F ration
tends to be large.
The most common form of graph is _____ for and F distribution? - ANSWER✔✔-Right skewed
distribution
If your F value is larger than F crit you may _____ the null hypothesis. - ANSWER✔✔-Reject.
If the p value is less than 0.05 you may _____ the null hypothesis. - ANSWER✔✔-Reject
With only two groups either a ____ test or an F tests can be used for testing for significance between
means. - ANSWER✔✔-t test!
When there are only two groups both F tests and t tests lead to the same conclusion T/F. - ANSWER✔✔-
T
When group number is 2, F = ____ - ANSWER✔✔-F = t^2 when there are two groups.
In one way anova, SST is partitioned into SSM and SSR. Where does it go from there? - ANSWER✔✔-SSM
will lead to MSM
SSR will lead to MSR
F = MSM/MSR
SST = _____ + ______ - ANSWER✔✔-SST = SSM + SSR
SSM = Variation ___________ - ANSWER✔✔-SSM = variation between the sample means (across the
levels of IV)
Copyright ©Stuvia International BV 2010-2024 Page 2/12
