Question: Two approaches to learning problem solving strategies were investigated. 36 graders were randomly assigned to one of the two approaches [a1, a2] & a control condition (a3). The dependent variable is the number of solutions proposed. Do an analysis of variance for the following, with n = 10 in each of the three groups.
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a1
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a2
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a3
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Mean
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14.7
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11.2
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12.2
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Variance
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6.46
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4.18
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10.62
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a. Provide a source table.
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SS
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df
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MS
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F
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Significance (α = 0.05)
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Group Error
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Total
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[B] Calculate effect size.
[C] Do a Tukey test at α = 0.05. (Hint: T & B 4.16, qT = 2.93)
[D] Make one set including coding you would use and the associated hypotheses.