Calculate the Population Standard Deviation. 1  Calculate the mean or average of each data set. 2  Add up all the numbers in a data set and divide by the total number of pieces of data. 3  For example, if you have found numbers in a data set, divide the sum by 4.4  This is the mean of the data set.alculate the Population Standard Deviation. 1  Calculate the mean or average of each data set. 2  Add up all the numbers in a data set and divide by the total number of pieces of data. 3  For example, if you have found numbers in a data set, divide the sum by 4.
It takes about three days to four days for your milk to come in, if youâre a first-time mum. If you've had a baby before, it can happen earlier than this. Your breasts will start to feel full a couple of days after giving birth, which is a sign that your milk is coming in.
If your breast feeding then it should start to shrink sooner. Breast feeding after labor causes the uterus to lightly contract so that it can start geting back to normal quicker. For breast feeding moms it should take 4 - 6 weeks for your uterus to get back to normal.However if your not breast feeding then it should get back to normal 6 - 8 weeks after delivery.Source(s):or breast feeding moms it should take 4 - 6 weeks for your uterus to get back to normal. However if your not breast feeding then it should get back to normal 6 - 8 weeks after delivery. Source(s):