Table 12.16 below represents the relationship between the number of hours spent studying and final exam grades.
| x (number of hours spent studying) | y (final exam grades) |
| 3 | 50 |
| 5 | 72 |
| 1 | 45 |
| 2 | 51 |
| 6 | 80 |
| 8 | 96 |
| 4 | 65 |
| 7 | 90 |
Fill in the following chart as a first step in finding the line of best fit, using the median–median approach.
| Group | x (no. of hours spent studying) | y (final exam grades) | Median x Value | Median y Value |
| 1 | ||||
| 2 | ||||
| 3 |
OpenStax Statistics, 12.2 The Regression Equation, exercise 2