1. THE ARITHMETIC MEAN COMPUTED FROM GROUPED DATA a. Use the method of Problem 3.18(a) to find the arithmetic mean of the numbers 5, 8, 11, 9, 12, 6, 14, and 10, choosing as the ‘‘guessed mean’’ A the...

1. THE ARITHMETIC MEAN COMPUTED FROM GROUPED DATA

a. Use the method of Problem 3.18(a) to find the arithmetic mean of the numbers 5, 8, 11, 9, 12, 6, 14, and 10, choosing as the ‘‘guessed mean’’ A the values (a) 9 and (b) 20.

b. Use the method of Problem 3.18(b) to find the arithmetic mean of the heights of the 100 male students at XYZ University (see Problem 3.15).

c. Let dj = Xj - A denote the deviations of any class mark Xj in a frequency distribution from a given