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    yellow123's Avatar
    yellow123 Posts: 8, Reputation: 1
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    #1

    Mar 20, 2011, 03:00 PM
    formula for finding 30th percentile in statistics X 90-99?
    X F cf c%

    90-99 4 20 100
    80-89 7 16 80
    70-79 4 9 45
    60-69 3 5 25
    50-59 2 2 10

    Find the 30th percentile
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
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    #2

    Mar 21, 2011, 05:53 AM

    Read this first: Expectations for the Homework Help board

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