The Excel VARP function calculates the variance of an entire population of data. If data represents a sample, use the VAR function or the newer VAR.S function. VARP ignores text values and logicals in references.
VARP ignores text and logicals passed into as cell references. For example, VARP will ignore FALSE when it appears in a range like A1:A10. However, VARP will evaluate logical values, and text representations of numbers hardcoded directly as arguments.
The Excel VAR function estimates the variance of a sample of data. If data represents the entire population, use the VARP function or the newer VAR.P function. VAR ignores text values and logicals in references.