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Kernel smoothing function estimate for univariate and bivariate data

`[`

returns a probability
density estimate, `f`

,`xi`

]
= ksdensity(`x`

)`f`

, for the sample data in the
vector or two-column matrix `x`

. The estimate is
based on a normal kernel function, and is evaluated at equally-spaced
points, `xi`

, that cover the range of the data
in `x`

. `ksdensity`

estimates
the density at 100 points for univariate data, or 900 points for bivariate
data.

`ksdensity`

works best with continuously
distributed samples.

`[`

returns
a probability density estimate, `f`

,`xi`

]
= ksdensity(`x`

,`pts`

,`Name,Value`

)`f`

, for the sample
in the vector or two-column matrix `x`

, with additional
options specified by one or more `Name,Value`

pair
arguments.

For example, you can define the function type `ksdensity`

evaluates,
such as probability density, cumulative probability, survivor function,
and so on. Or you can specify the bandwidth of the smoothing window.

[1] Bowman, A. W., and A. Azzalini. *Applied
Smoothing Techniques for Data Analysis*. New York: Oxford
University Press Inc., 1997.

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