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.
Most babies lose a small amount of weight in the first 3 to 5 days after birth. This is unrelated to breastfeeding. As your baby needs more milk and nurses more, your breasts respond by making more milk. Experts recommend breastfeeding exclusively (no formula, juice, or water) for 6 months. If you supplement with formula, your breasts might make less milk. Even if you breastfeed less than the recommended 6 months, it's better to breastfeed for a short time than no time at all.