/// <summary>
/// Math equation linear : Y = B1*X + B0
/// </summary>
public void Solve(out double B0, out double B1)
{
double xbar = VX.Sum() / VX.Count;
double ybar = VY.Sum() / VY.Count;
double sumX2 = VX.Sum(t => t * t);
double xxbar = 0, yybar = 0, xybar = 0;
for (int i = 0; i < VX.Count; i++)
{
xxbar += (VX[i] - xbar) * (VX[i] - xbar);
yybar += (VY[i] - ybar) * (VY[i] - ybar);
xybar += (VX[i] - xbar) * (VY[i] - ybar);
}
B1 = xybar / xxbar;
B0 = ybar - B1 * xbar;
}