Knowledge and math formulas.
| Front | What distribution can be used to estimate the time for a fixed number of events at a constant rate to occur? |
| Back | Erlang, which is a special case of Gamma when the shape k is a (positive) integer |
| Front | What are the properties of the Gamma distribution? |
| Back | It describes the time to wait for a fixed number of events (with a constant rate) to occur, and therefore is closely related to the Exponential distribution.It takes two parameters:1. the event rate per unit time lambda, or sometimes expressed as scale beta, which is the reciprocal rate, 1/lambda (so the mean unit timespan between events), and2. a parameter for the number of events to wait for, typically known as the shape. If an integer, the distribution is called Erlang. If 1, Gamma is equivalent to the Exponential, and if very large (100, for example), it approaches the Gaussian. |
| Front | What parameters does the multinomial distribution use? |
| Back | The number of trials and the probabilities of each event modality. |