Compute x, s', and s for this sample. Count the number of measurements in the intervals x + s, x 1 2s, and x 1 3s. Express each count as a...

Math - statistical method

Please solve and explain A and B , the data are given below :

Questions 1: The following is a sample of 25 measurements:

7 , 6 , 6 , 11, 8 , 9 , 11 , 9 , 10 , 8 , 7 ,7 ,5

9 ,10, 7 , 7 , 7 , 7 , 9 , 12, 10 ,10, 8 ,6

a. Compute x, s', and s for this sample.b. Count the number of measurements in the intervalsx + s, x 1 2s, and x 1 3s. Express each count as apercentage of the total number of measurements.