public void CalculateValues(Binomial_RV xB_rv)
{
int n = (int)xB_rv.GetSubExressions()[0][0].GetValue();
double p = (double)xB_rv.GetSubExressions()[0][1].GetValue();
int x = (int)xB_rv.GetSubExressions()[0][2].GetValue();
// Formula: P(X = j) = nCj * p ^ j * q ^ (n - j),
// - nCr = n! / ((n-r)! * r!).
Value = (Factorial(n) / (Factorial(n - x) * Factorial(x))) * Math.Pow(p, x) * Math.Pow((1 - p), (n - x));
}
// Probability Mass Function
public pmf(bool isPrimitive) : base(
isPrimitive,
typeof(pmf),
"pmf",
"P(X=x)",
"s"
)
{
if (isPrimitive)
{
return;
}
SegmentsTitles.Add("From Binomial");
// Segments
Expression[] secondSegment = new Expression[1];
secondSegment[0] = new Binomial_RV();
SubExpressions.Add(secondSegment);
}