Exponential Distribution - rFronteddu/general_wiki GitHub Wiki

X~Exp(p): "Variable X follows an exponential distribution with scale p."

• The exponential distribution describes variables that:
  • Start of high
  • Initially decrease
  • Eventually plateau
• p determines how fast the plate is reached and how spread out the graph is.
• E(Y) = 1/p
• Var(y) = 1/ysquared
• There is no table of known variables but we can transform it into a normal distribution by using the transformation X = ln(y) (used for example in linear regression).

ex. Number of views for a YouTube video.