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ds_list_geometric_mean

Computes the geometric mean of values in a list.

The geometric mean of a data set \(\{a_1,a_2 , \ldots,a_n\}\) is given by:

$$\large \left(\prod_{i=1}^n a_i \right)^{1/n} = \sqrt[n]{a_1 a_2 \cdots a_n}$$

ds_list_geometric_mean(list)
Returns the geometric mean of values in a list.
COPY/// @func   ds_list_geometric_mean(list)
///
/// @desc   Returns the geometric mean of values in a list.
///
/// @param  {list}      list        list data structure
///
/// @return {real}      geometric mean
///
/// GMLscripts.com/license

function ds_list_geometric_mean(list)
{
    var n = ds_list_size(list);
    if (n == 0) return undefined;

    var geo = 1;

    for (var i=0; i<n; i++) geo *= ds_list_find_value(list, i);

    return power(geo, 1 / n);
}

Contributors: Quimp

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