 washing time, and concentrations of
by-products at various steps.  Some of the process measurements can
be controlled, while others are observed.  Predictors are continuous,
count, categorical; some are correlated, and some contain missing
values.  Samples are not independent because sets of samples come from
the same batch of biological starting material.
</p>
<p>Columns:
</p>

<ul>
<li> <p><code>yield</code>:  numeric
</p>
</li>
<li> <p><code>bio_material_01</code> - <code>bio_material_12</code>:  numeri