tarts with math, explores models, and then creates the data generating mechanism. </td>
  </tr>
  <tr>
   <td style="text-align:left;"> courage-2 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> linear_reg(engine = "lm") </td>
  </tr>
  <tr>
   <td style="text-align:left;"> courage-3 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> linear_reg(engine = "lm") |&gt; 
   fit(arrested ~ sex, data = x) </td>
  </tr>
  <tr>
 