Important: The stats package has been deprecated. Use the superseding package Statistics instead.

The function frequency of the subpackage stats[transform, ...] replaces each data point of data by its frequency or weight.

The order of the data items is not changed.

Statistical data items in a list have a weight, obtained using transform[frequency] and a value, obtained using transform[statvalue]. One can obtained the total frequency, or total weight, using describe[count]. All frequencies in a statistical data list can be changed, proportionally, using the transform[scaleweight].

$\mathrm{with}\left(\mathrm{stats}\right)\:$

$\mathrm{transform}\left[\mathrm{frequency}\right]\left(\left[3\right]\right)$

$\left[1\right]$

$\mathrm{transform}\left[\mathrm{frequency}\right]\left(\left[\mathrm{Weight}\left(3\,4\right)\right]\right)$

$\left[4\right]$

$\mathrm{transform}\left[\mathrm{frequency}\right]\left(\left[3..4\right]\right)$

$\left[1\right]$

$\mathrm{data}≔\left[\mathrm{Weight}\left(3\,10\right)\,\mathrm{missing}\,4\,\mathrm{Weight}\left(11..12\,3\right)\,15..17\right]$

$\mathrm{data}≔\left[\mathrm{Weight}\left(3\,10\right)\,\mathrm{missing}\,4\,\mathrm{Weight}\left(11..12\,3\right)\,15..17\right]$

$\mathrm{transform}\left[\mathrm{frequency}\right]\left(\mathrm{data}\right)$

$\left[10\,1\,1\,3\,1\right]$