Calculate the Sample Standard Deviation. 1  Calculate the mean or average of each data set. 2  To do this, 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.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.
Most pregnant women begin to show during the second trimester. You likely gained less than 5 pounds during your first trimester, but now the number on the scale is edging relentlessly upward. As your second trimester proceeds, you'll gain an average of 1 to 2 pounds per week.
Yes | No Thank you! i began to show with my twins at 16 weeks it was questionable before that but it was noticable at 16 weeks. the belly gets big really fast after that i sat here for almost an entire day and noticed a difference in my own below by nightfall.es | No Thank you! I started showing in about week 11 or 12. But I think it depends on how flat your stomach is before you got pregnant as to how soon a belly will begin to show.