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.
There are early detection pregnancy tests available that can confirm pregnancy as early as 6 - 8 days after conception has occurred (well before a missed period). Early pregnancy symptoms can sometimes happen before a missed period and before a positive pregnancy test. Especially the 3, 4, 5, and 6 weeks pregnant signs. Early pregnancy symptoms and signs are usually related to the pregnancy hormone hCG or Human Chorionic Gonadotropin which is responsible for pregnancy signs.