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.
Sometimes it just takes a little (or a lot) longer for milk to come in, especially if there was any disruption in the course of birth. You're already well ahead of the game doing all your supplementing at the breast instead of in a bottle. Every 3-4 hours is not terribly frequent to be nursing. I'm not sure how much of a to-do it is to nurse with an SNS, but it might help your milk come in faster if you could nurse every 2 hours or so. Maybe you wouldn't even need the SNS for every single feed, if she's not terribly hungry at some of them.