Statistics: geocdf

### Function Reference: `geocdf`

statistics: p = geocdf (x, ps)
statistics: p = geocdf (x, ps, `"upper"`)

Geometric cumulative distribution function (CDF).

For each element of x, compute the cumulative distribution function (CDF) of the geometric distribution with probability of success parameter ps. The size of p is the common size of x and ps. A scalar input functions as a constant matrix of the same size as the other inputs.

`p = geocdf (x, ps, "upper")` computes the upper tail probability of the geometric distribution with parameter ps, at the values in x.

The geometric distribution models the number of failures (x) of a Bernoulli trial with probability ps before the first success.

Further information about the geometric distribution can be found at https://en.wikipedia.org/wiki/Geometric_distribution

See also: geoinv, geopdf, geornd, geofit, geostat

Source Code: geocdf

### Example: 1

     ## Plot various CDFs from the geometric distribution
     x = 0:10;
     p1 = geocdf (x, 0.2);
     p2 = geocdf (x, 0.5);
     p3 = geocdf (x, 0.7);
     plot (x, p1, "*b", x, p2, "*g", x, p3, "*r")
     grid on
     xlim ([0, 10])
     legend ({"ps = 0.2", "ps = 0.5", "ps = 0.7"}, "location", "southeast")
     title ("Geometric CDF")
     xlabel ("values in x (number of failures)")
     ylabel ("probability")