Canceler you there? lol ......... help, lol...... errhh ok, i got some data. daily earnings and i know what the expected value for daily earnings is so is there a function in excel that i can use to estimate the standard deviation? i was gonna use STDEV but there's no where in that function to enter the known expected value. any help?:fish::fish: edit: so maybe there shouldn't be anyway in there to enter ev, i guess, right?:whip: like ok if i use STDEV, is that figure produced, one standard deviation? can i come up with one of those bell curve graph's with my data?