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Comparing Scores in Your
Group with Scores in Another Group - Means and Standard Deviations, Sample
Size Known
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Data
for Your Group
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a) Mean (Average) score
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b) Standard deviation
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c) Number of students tested
(if available)
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Data for the comparison group
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a) Mean (Average) score
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b) Standard deviation
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c) Number of students tested
(if available)
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Results
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Effect Size
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Improvement Index
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Probability
this effect would occur by chance
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