public static double GetEmpericalFunctionValue(double x, VariationRow variationRow)
{
double empericalValue = 0;
var variants = variationRow.Variants;
if (x > variants[variants.Count - 1].Value)
{
empericalValue = 1;
}
else
{
for (int i = 0; i < variants.Count; i++)
{
if (x <= variants[i].Value) // X <= Xi
{
for (int j = 0; j < i; j++)
{
empericalValue += variants[j].Frequency;
}
empericalValue /= variationRow.DataCount;
break;
}
}
}
return(empericalValue);
}
public static double GetStep(VariationRow variationRow, int intervalsNumber)
{
var maxValue = variationRow.Variants.OrderByDescending(variant => variant.Value).First().Value;
var minValue = variationRow.Variants.OrderBy(variant => variant.Value).First().Value;
return((maxValue - minValue) / intervalsNumber); // Размах вариации / количество классов (интервалов)
}
private void FillVariationTable(VariationRow variationRow)
{
gvVariationRow.Rows.Clear();
for (int i = 0; i < variationRow.Variants.Count; i++)
{
var rowIndex = gvVariationRow.Rows.Add();
var variant = variationRow.Variants[i];
gvVariationRow.Rows[rowIndex].HeaderCell.Value = String.Format("{0}", rowIndex + 1);
gvVariationRow.Rows[rowIndex].Cells["Value"].Value = variant.Value;
gvVariationRow.Rows[rowIndex].Cells["Frequency"].Value = variant.Frequency;
gvVariationRow.Rows[rowIndex].Cells["RelativeFrequency"].Value = String.Format("{0:0.###}", variant.RelativeFrequency);
gvVariationRow.Rows[rowIndex].Cells["cumFreq"].Value = String.Format("{0:0.###}", variant.CummulatedFrequency);
gvVariationRow.Rows[rowIndex].Cells["DistributionFunction"].Value = String.Format("{0:0.###}", variant.EmpericalFunction);
}
}
private void FillAllData(List <double> dataItems)
{
variationRow = new VariationRow(dataItems);
FillVariationTable(variationRow);
DrawEmpericalChart(variationRow.Variants);
lblStegesClassesCount.Text = Formulas.GetNumberOfClasses(dataItems.Count).ToString();
nudIntervalsCount.Value = Formulas.GetNumberOfClasses(variationRow.DataCount);
iVariationRow = new IntervalVariationRow(variationRow, (int)nudIntervalsCount.Value);
FillIntervalVariationTable(iVariationRow);
DrawHistogram(iVariationRow, dataItems);
FillCharacteristicsGrid(dataItems, dgvCharacteristics);
}