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.
Pregnancy Symptoms You Can Feel. Just a few days after the fetus is conceived, it implants in the uterus. This is when the first physical signs of pregnancy start. Women may feel cramping and experience spotting at this early stage.If spotting occurs, it may not show until one to two weeks after the fertilized egg is implanted.Spotting is called implantation bleeding.imeline for Early Symptoms You Can Feel. Changes occur in the female body as soon as conception occurs, but these changes cause no physical changes until about one week after pregnancy. From that point until the end of gestation, physical changes can be felt throughout the pregnancy.