Question

1. One-way ANOVA review (7pts) a. Why do we need to do post-hoc tests when the F ratio is significant? Would we do a post-hoc test for a non-significant result? b. What does eta squared tell you? c. Consider the following scenario: "Fifteen third-grade students participated in a memory experiment. Five students had a story read to them by a teacher, five read the story themselves, and five saw a video of the story. Each student then took a memory test on 12 items from the story." What is the independent variable (aka, factor) in this scenario? HINT: You may need to come up with a suitable variable name from the description, it is not always explicitly named. d. What is the dependent variable in this scenario? e. What are the levels of the independent variable in this scenario? f. What are the null and the alternative hypotheses in the scenario above? g. What would be the appropriate degrees of freedom in the ANOVA report? In other words, what would be the df1 and df2 in F(df1,df2)?

          1. One-way ANOVA review (7pts)
a. Why do we need to do post-hoc tests when the F ratio is significant? Would we do a post-hoc test for a non-significant result?
b. What does eta squared tell you?
c. Consider the following scenario: "Fifteen third-grade students participated in a memory experiment. Five students had a story read to them by a teacher, five read the story themselves, and five saw a video of the story. Each student then took a memory test on 12 items from the story."
What is the independent variable (aka, factor) in this scenario? HINT: You may need to come up with a suitable variable name from the description, it is not always explicitly named.
d. What is the dependent variable in this scenario?
e. What are the levels of the independent variable in this scenario?
f. What are the null and the alternative hypotheses in the scenario above?
g. What would be the appropriate degrees of freedom in the ANOVA report? In other words, what would be the df1 and df2 in F(df1,df2)?

1. One-way ANOVA review (7pts)
a. Why do we need to do post-hoc tests when the F ratio is significant? Would we do a post-hoc test for a non-significant result?
b. What does eta squared tell you?
c. Consider the following scenario: "Fifteen third-grade students participated in a memory experiment. Five students had a story read to them by a teacher, five read the story themselves, and five saw a video of the story. Each student then took a memory test on 12 items from the story."
What is the independent variable (aka, factor) in this scenario? HINT: You may need to come up with a suitable variable name from the description, it is not always explicitly named.
d. What is the dependent variable in this scenario?
e. What are the levels of the independent variable in this scenario?
f. What are the null and the alternative hypotheses in the scenario above?
g. What would be the appropriate degrees of freedom in the ANOVA report? In other words, what would be the df1 and df2 in F(df1,df2)?

Added by Ricardo R.

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