Which function estimates standard deviation based on a sample in Excel? STANDARDIZE STDEV.S SDEV.P STDEVPA

The function you're looking for is STDEV.S, which estimates the standard deviation based on a sample of data, rather than the entire population. This function calculates how much the values in your sample deviate from the mean, giving you a sense of variability without being skewed by the whole set. When using STDEV.S, remember that it’s designed for sample data, so if you're evaluating an entire population, you'd want to use STDEV.P for that purpose instead. A common mistake is using STDEV.S for population data, which can lead to underestimating variability. So, pick the right function for your data type!