either using its
<code>data.test</code> or its <code>train.p</code> argument.</p>
<!-- Example: Using test data (for prediction, rather than fitting): -->
<p>For example, we can repeat the previous analysis, but now let’s
create separate training and test datasets by including the
<code>train.p = .50</code> argument. This will split the dataset into a
50% training set, and a distinct 50% testing set. (Alternatively, we
could specify a dedicated test data set by using the
<code>data.test</code> argument.