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Comparing Changes Over Time in One Group with Changes Over Time
in A Larger Group - Percentile Rank of Average Student, Sample Size Known
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Enter
the data for your group
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a)
Percentile rank of average student in the more recent year
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b)
number of students in the more recent year
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c)
Percentile rank of average student in the comparison year
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d)
Number of students in the comparison year
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Enter
the data for the comparison group
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a)
Percentile rank of average student in the more recent year
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b)
Percentile rank of average student in the comparison year
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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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