n=6 (this relates to maximum values of measurements of force (in Newton) when conducting the same process with the same setting of parameters 6 times)
When I refer to all these 6 values, I am using STDEVP (or whatever exactly it is called in the English version of Excel--I got various hits for the "whole" stdev variant).
What should I use for calculating a CI with
\alpha = 0.05then,
If I refer to 4 of said 6 values and then use
STDEV.S, would that be correct? Also, if I like to calculate the CI (alpha=0.05) for those 4 values, I have to switch the formula to using the stdev.s value, right?