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Comparing Scores in One Group with Those in a Larger Group -
Means and Standard Deviations, Sample Size Known
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Data
for Your Group
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a)
Average score of students in your group
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b)
Number of students tested
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Data
for the Larger Group
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a)
Average score of students in the larger group
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b)
Standard deviation of scores in the larger group
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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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