Probability Density Function Let \(\alpha,\beta>0\) \begin{equation*}...
If the time between successive events is independent each with an exponential distribution with \(\lambda\), then the total time \(X\)...
Chi-squared distribution Probability Density Function The parameter is \(\nu\) and it is a positive integer. It is the gamma...
Exponential distribution Probability Density Function Let \(\lambda>0\) \begin{equation*} f(x;\lambda)=\lambda e^{-\lambda x}...
The problem with the normal distribution is that it is symmetric. The Gamma distribution is useful for skewed distributions....