In statistics, a process that consists of prolonging a statistical series by introducing a new term that obeys the rule of the series to the sequence of given terms.
Example
We represented the sequence of statistical data in the table below:
| x | 2 | 3 | 5 | 7 | 9 |
| y | 1 | 3 | 7 | 11 | 15 |
We determine that the relation that best describes this sequence is “y = 2x − 3.”
By extrapolation, we can determine that, if x = 30, then y = 57.
