private void ComputeComparisonStats()
{
comparisonTable.Clear();
comparisonChart.Clear();
var activityA = chartA.Activity;
var activityB = chartB.Activity;
if (TTest.Busy ||
activityA == null || activityB == null ||
activityA.Count <= 1 || activityB.Count <= 1)
{
return;
}
var firstValue = activityA[0].Y;
var allSame = activityA.Zip(activityB, (a, b) => a.Y == b.Y && a.Y == firstValue).All(i => i);
if (allSame)
{
MessageBox.Show("The selected activity sets are identical and of singular value.");
return;
}
//Compute T-test
var tTest = TTest.Perform
(
activityA.Select(p => p.Y).ToList(),
activityB.Select(p => p.Y).ToList()
);
//Update table
comparisonTable.lblAvgA.Content = tTest.TTest.FirstSeriesMean.ToString("N2");
comparisonTable.lblAvgB.Content = tTest.TTest.SecondSeriesMean.ToString("N2");
comparisonTable.lblNA.Content = tTest.FirstSeriesCount.ToString("N0");
comparisonTable.lblNB.Content = tTest.SecondSeriesCount.ToString("N0");
comparisonTable.lblStDevA.Content = tTest.FirstSeriesStandardDeviation.ToString("N2");
comparisonTable.lblStDevB.Content = tTest.SecondSeriesStandardDeviation.ToString("N2");
comparisonTable.lblAvgDiff.Content = (tTest.MeanDifference > 0 ? "+" : "") +
tTest.MeanDifference.ToString("N2");
if (tTest.TTest.FirstSeriesMean != 0)
{
comparisonTable.lblAvgPercent.Content = tTest.PercentMeanDifference.ToString("P2");
}
else
{
comparisonTable.lblAvgPercent.Content = "-";
}
//Update Chart
comparisonChart.UpdateChart
(
tTest.TTest.FirstSeriesMean, tTest.FirstSeries95ConfidenceBound,
tTest.TTest.SecondSeriesMean, tTest.SecondSeries95ConfidenceBound
);
}
private void ComputeComparisonStats()
{
if (TTest.Busy ||
chartA.Activity == null || chartB.Activity == null ||
chartA.Activity.Count <= 1 || chartB.Activity.Count <= 1)
{
return;
}
//Compute T-test
var tTest = TTest.Perform
(
chartA.Activity.Select(p => p.Y).ToList(),
chartB.Activity.Select(p => p.Y).ToList()
);
//Update table
comparisonTable.lblAvgA.Content = tTest.TTest.FirstSeriesMean.ToString("N2");
comparisonTable.lblAvgB.Content = tTest.TTest.SecondSeriesMean.ToString("N2");
comparisonTable.lblNA.Content = tTest.FirstSeriesCount.ToString("N0");
comparisonTable.lblNB.Content = tTest.SecondSeriesCount.ToString("N0");
comparisonTable.lblStDevA.Content = tTest.FirstSeriesStandardDeviation.ToString("N2");
comparisonTable.lblStDevB.Content = tTest.SecondSeriesStandardDeviation.ToString("N2");
comparisonTable.lblAvgDiff.Content = (tTest.MeanDifference > 0 ? "+" : "") +
tTest.MeanDifference.ToString("N2");
if (tTest.TTest.FirstSeriesMean != 0)
{
comparisonTable.lblAvgPercent.Content = tTest.PercentMeanDifference.ToString("P2");
}
else
{
comparisonTable.lblAvgPercent.Content = "-";
}
//Update Chart
comparisonChart.UpdateChart
(
tTest.TTest.FirstSeriesMean, tTest.FirstSeries95ConfidenceBound,
tTest.TTest.SecondSeriesMean, tTest.SecondSeries95ConfidenceBound
);
}