Stdev. Standard deviation doesn t work on categorical data. Standard deviation in statistics typically denoted by σ is a measure of variation or dispersion refers to a distribution s extent of stretching or squeezing between values in a set of data.
Standard deviation may be abbreviated sd and is most commonly. It will return the exact same value as the stdev s function. So now you ask what is the variance.
Standard deviation measures how much variance there is in a set of numbers compared to the average mean of the numbers.
In essence it returns a value that tells you how much your data deviates from the average value. Standard deviation measures how much variance there is in a set of numbers compared to the average mean of the numbers. Standard deviation may be abbreviated sd and is most commonly. In statistics the standard deviation is a measure of the amount of variation or dispersion of a set of values.
