private static List <StatisticClass> CreateClasses(double classAmplitude, int classNumber, List <double> allElements)
{
var list = new List <StatisticClass>();
var classVariable = Math.Round(allElements[0], 3);
var accumulatedFrequency = 0;
for (var i = 0; i < classNumber; i++)
{
var myClass = new StatisticClass()
{
Begin = Math.Round(classVariable, 3), End = Math.Round(classVariable += classAmplitude, 3)
};
myClass.DefineName();
foreach (var item in allElements)
{
if (item >= myClass.Begin && item < myClass.End)
{
myClass.Elements.Add(item);
}
}
myClass.AbsolutFrequency = myClass.Elements.Count();
myClass.AccumulatedFrequency = accumulatedFrequency += myClass.AbsolutFrequency;
myClass.MidPoint = ClassMidPointCalculator(myClass.End, myClass.Begin);
list.Add(myClass);
}
return(list);
}
private static double CalculateMedian(List <StatisticClass> values, double amplitude)
{
double medianPos = values.Count / 2;
var medianClass = new StatisticClass();
foreach (var value in values)
{
if (!(medianPos < value.AccumulatedFrequency))
{
continue;
}
medianClass = value;
break;
}
var medianClassPos = values.FindIndex(a => a == medianClass);
var previousMedianClassFrequency = PreviousFrequencyMedian(values, medianClassPos);
var divisionTop = medianPos - previousMedianClassFrequency;
var lowerLimitMiddleClass = medianClass.Begin;
var absoluteFrequencyMiddleClass = medianClass.AbsolutFrequency;
var median = lowerLimitMiddleClass + ((divisionTop / absoluteFrequencyMiddleClass) * amplitude);
return(median);
}