NetLogo Help: random-exponential random-gamma random-normal random-poisson

### random-exponential1.2.1 random-gamma2.0 random-normal1.2.1 random-poisson1.2.1

#### random-exponential mean random-gamma alpha lambda random-normal mean standard-deviation random-poisson mean

Reports an accordingly distributed random number with the mean and, in the case of the normal distribution, the standard-deviation. (The standard deviation may not be negative.)

random-exponential reports an exponentially distributed random floating point number. It is equivalent to `(- mean) * ln random-float 1.0`.

random-gamma reports a gamma-distributed random floating point number as controlled by the floating point alpha and lambda parameters. Both inputs must be greater than zero. (Note: for results with a given mean and variance, use inputs as follows: alpha = mean * mean / variance; lambda = 1 / (variance / mean).)

random-normal reports a normally distributed random floating point number.

random-poisson reports a Poisson-distributed random integer.

    show random-exponential 2
    ;; prints an exponentially distributed random floating
    ;; point number with a mean of 2
    show random-normal 10.1 5.2
    ;; prints a normally distributed random floating point
    ;; number with a mean of 10.1 and a standard deviation
    ;; of 5.2
    show random-poisson 3.4
    ;; prints a Poisson-distributed random integer with a
    ;; mean of 3.4

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