What is VAR.P function in Excel? VAR.P function is one of Statistical functions in Microsoft Excel that calculates variance based on the entire population (ignores logical values and text in the population). Syntax of VAR.P function VAR.P(number1,[number2],…) The VAR.P function syntax has the following arguments: Number1: The first number argument corresponding to a population. Number2, … (Optional): Number arguments 2 to 254…