populationSTDEVPACalculates standard deviation based on the entire population, including numbers, text, and logical valuesSTEYXReturns the standard error of the predicted y-value for each x in the regressionSUBSTITUTESubstitutes new text for old text in a text stringSUBTOTALReturns a subtotal in a list or databaseSUMAdds its argumentsSUMIFAdds the cells specified by a given criteriaSUMPRODUCTRetu