Computing group variability and post hoc testing

Reference no: EM1317077

Q1) Read following research scenario and conduct a 6step OneWay ANOVA

A university biology professor has developed 4 methods for teaching senior? Level class in microbiology. At start of year, professor arbitrarily allocates students to 4 groups. Attrition takes place in the year, so that some of groups lose more members than others. Following are final exam scores for each group.

Using variables below, (1) mention a research question which would be answered with One Way ANOVA test, (2) prepare null hypothesis for this question, and (3) prepare research hypothesis for this question. College GPA and graduation status (graduated on time, didn't graduate on time, didn't graduate at all).

1 2 3 4

91 72 82 93

95 78 58 84

96 67 64 80

99 91 76 75

88 80 70

91 86

i) Make the hypotheses

ii) Set criteria for decision making

iii) Compute the between group variability

iv) Compute the within group variability

v) Compute the F-ratio

vi) Mention your decisions

vii) Write your conclusions in full sentences.

viii) Organize your computations into the ANOVA summary table.

ix) Regardless of there is or there is no statistical significance, compute the effect size (R2) and interpret in full sentences.

x) Do you require any post hoc testing? Why or why not? Decribe in detail.

Reference no: EM1317077

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