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Timestamp:
12/16/14 23:55:48 (9 years ago)
Author:
ascheibe
Message:

#2031

  • expanded documentation for statistical testing view
  • changed t-test to unpooled method
  • removed sample size determination for t-test as this is probably not correct
File:
1 edited

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  • branches/StatisticalTesting/HeuristicLab.Analysis.Statistics/3.3/StatisticalTestingView.cs

    r11612 r11691  
    428428
    429429      var rowNames = new string[] { "p-Value of Mann-Whitney U", "Adjusted p-Value of Mann-Whitney U",
    430             "p-Value of T-Test", "Adjusted p-Value of T-Test", "Necessary Sample Size for T-Test", "Cohen's d", "Hedges' g" };
     430            "p-Value of T-Test", "Adjusted p-Value of T-Test", "Cohen's d", "Hedges' g" };
    431431
    432432      DoubleMatrix pValsMatrix = new DoubleMatrix(rowNames.Length, columnNames.Count());
     
    437437      double mwuLefttail;
    438438      double mwuRighttail;
    439       double tTestLefttail;
     439      double tTestBothTails;
    440440      double[] mwuPValues = new double[newData.Length];
    441441      double[] tTestPValues = new double[newData.Length];
     
    448448          alglib.mannwhitneyutest(data[colIndex], data[colIndex].Length, newData[i], newData[i].Length, out mwuBothtails,
    449449            out mwuLefttail, out mwuRighttail);
    450           tTestLefttail = TTest.Test(data[colIndex], newData[i]);
     450          tTestBothTails = TTest.Test(data[colIndex], newData[i]);
    451451          mwuPValues[i] = mwuBothtails;
    452           tTestPValues[i] = tTestLefttail;
     452          tTestPValues[i] = tTestBothTails;
    453453        }
    454454      }
     
    463463          pValsMatrix[2, i] = tTestPValues[i];
    464464          pValsMatrix[3, i] = adjustedTtestPValues[i];
    465           pValsMatrix[4, i] = TTest.GetOptimalSampleSize(data[colIndex], newData[i]);
    466           pValsMatrix[5, i] = SampleSizeDetermination.CalculateCohensD(data[colIndex], newData[i]);
    467           pValsMatrix[6, i] = SampleSizeDetermination.CalculateHedgesG(data[colIndex], newData[i]);
     465          pValsMatrix[4, i] = SampleSizeDetermination.CalculateCohensD(data[colIndex], newData[i]);
     466          pValsMatrix[5, i] = SampleSizeDetermination.CalculateHedgesG(data[colIndex], newData[i]);
    468467        }
    469468      }
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