Final answer:
The false statement when using the diff function is that it performs interpolation to estimate missing values.
Step-by-step explanation:
The false statement when using the diff function in MATLAB is that it performs interpolation to estimate missing values. The diff function calculates the differences between consecutive elements of a sequence, so it does not perform interpolation to estimate missing values.
It can be applied to numerical data and returns one fewer element than the input sequence, corresponding to the differences calculated.