Data graphs allow you to interpolate new values within them, if necessary. To interpolate data within a data graph or clear interpolations, see the following instructions.
The Interpolate dialog box appears.
The new value must be greater than the smallest existing value and smaller than the greatest existing value.
The new value that you entered appears in the data graph.
Only the values that are relevant to the selected point are stored when you insert information in your calculations.
Your latest interpolation is cleared.