.. _variables-histogram_bin_uncertain-pairs_per_variable:

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pairs_per_variable
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Number of pairs defining each histogram bin variable


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**Specification**

- *Alias:* num_pairs 

- *Arguments:* INTEGERLIST

- *Default:* equal distribution


**Description**


By default, the list of ``abscissas`` and ``counts`` or ``ordinates``
will be evenly divided among the ``histogram_bin_uncertain``
variables. ``pairs_per_variable`` is a list of integers that specify
the number of pairs to apportion to each variable.


