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Thread: Which statistical test?

  1. #1
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    Which statistical test?




    Hi

    I am currently writing my bachelorthesis. The subject is bankruptcy models. There are model 1, 2 en 3 that can predict a bankruptcy of a company. I would like to investigate if the accuracy ratio will effected by the period. The accuracy ratio is calculated as follows: number of good prediction/total number of prediction.


    For example:

    0 = not bankrupt
    1 = bankrupt
    with ( ) = actual
    with out ( ) = prediction
    sample size = 21

    The companies in period 1 en 2 are same


    Periode 1 (sample 1)
    Model 1: 0(0), 0(0), 0(0), 0(0), 1(0)..... = in this case 80% accuracy
    Model 2: 1(0), 1(0), 1(0), 0(0), 0(0)..... = in this case 40% accuracy
    Model 3: 0(0), 0(0), 0(0), 0(0), 0(0)..... = in this case 100% accuracy

    Periode 2 (sample 2)
    Model 1: 0(0), 0(0), 0(0), 0(0), 0(0)..... = in this case 100% accuracy
    Model 2: 1(0), 0(0), 0(0), 0(0), 0(0)..... = in this case 80% accuracy
    Model 3: 0(0), 0(0), 1(0), 1(0), 1(0)..... = in this case 40% accuracy

    I would like to indicate if the differencies (in accuracy ratio) in period 1 and 2 are Statistical significance

    My question: Which statistical test should I use to test the statistical significance in period 1 and 2.

    Thanks in advance!

  2. #2
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    Re: Which statistical test?


    Assuming you have counts or frequencies, you have two categorical traits - So a simple chi2 test would test the significance of this.
    P1model1 vs P2model1
    P1model2 vs P2model2 etc..

    Disclaimer (im not a statistician, a biologist)

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