Okay, the standard deviation is the square root of variance. So, to get a standard deviation we can use the S TD function to get a standard deviation for one variable one column, you can just put in the column name here. So, pretty common sense you can just put a colon in here into these are the F here, can we get a column for these are this column here and then we get or get a standard deviation. So we can do something ideas on the changes to our STD and then this one to STD so you get another standard deviation for sepal length for this separate body Better land for the better we know we got a standard deviation for these are SEPA land