idity)</li>
<li>There is a birthday in the year 1300 (validity/timeliness/accuracy)</li>
<li>There is an outlier date of death that is before the first presidential inauguration (validity/timeliness/accuracy)</li>
<li>New York is spelled with a lower case “y” in at least one entry (validity)</li>
<li>The value <code>Inf</code> (infinity) occurs as a length of presidency (validity)</li>
<li>The variable <code>ageAtInauguration</code> has been misclassified as a categorical variable, even though it is sup