Excel calculates values following logistic growth and can chart them on a line graph. Type "=A1/(1+B1exp(C1D1))" without quotes into an Excel cell. Type the value of the function's "N" constant ...

Any value of R can be represented in an infinite number of ways (e.g., if R = 16, we could write R = 8 x 2, or R = 42, or R = 32/2, or R = 2.718282.77). That last expression (R = 2.718282.77 ...