Okay, standard deviation is the square root of difference. So, to find a population or standard deviation, I will copy this data okay then I will find a n. So n will be the length of a. Now verify that V runs and then our square root of heroes. So annually this one, then our parents should be parents of A times n minus one divided by 10 less channel formula favors A n minus one divided by n n squared okay Square root parents okay. So I got two pi 26295. So I can get a population standard deviation for data using this equation here also.

So I will do something like m to N grow and to enroll the TA Okay, then I will find the variance for the data set S two is the column times n minus one divided by n. Do something that is very close to failures of our data set n times n and minus one divided by 10 Okay then I will square with a Davis sided square root okay right now okay, standard deviation, so standard deviation is squared or the variance. So to find a sample standard deviation, we can just use our SD meta function. So I will copy this data here Okay, so to find a standard deviation for sample, we can just use as the method function. So I got 2.3 by three pi to find a standard deviation for data set can do something IDs as the data in a column or a row.

So as the data ah sepal length so I will get zero pi eight to eight rows SS one