Jackknifing is a special type of interpolation which can be useful in
analyzing a scatter point set or an interpolation scheme. When the Jacknifing
command is selected, the active scatter point set is interpolated "to
itself" using the currently selected interpolation scheme. Each point
in the set is processed one at a time. The point is temporarily removed
and the selected interpolation scheme is used to interpolate to the location
of the missing point using the remaining points. Ideally, the interpolated
value should correspond closely to the original measured value at the
point. By interpolating to each point, a new data set is generated for
the scatter point set. This new data set can be compared with the original
data set using the **Summary** command
in the **Interpolation** menu. This
dialog is shown below.

You can select your original data set and then you can select the data set created from jacknifing. The mean error, mean absolute error, and the root mean squared error are automatically calculated.

**Related Links:**

Interpolation