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Thread: Trying to calculate confidence intervals

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    Trying to calculate confidence intervals




    Hi everyone. The numbers below are the annual maintenance costs of a program I am working on. I'd like to use the data set to estimate future costs at different confidence intervals (e.g. 80%). Can you help me with what distribution would be best and how to produce a CDF that I can graph different confidence levels on using Excel?

    1,966,763
    1,867,331
    2,059,427
    1,856,963
    1,847,963

    Thanks in advance!
    CostGeek

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    Re: Trying to calculate confidence intervals

    It sounds more like you want a prediction interval instead of a confidence interval.
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    Re: Trying to calculate confidence intervals


    And you only have five total values to base the intervals on, correct?
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