The following frequency distribution table gives data about platelet counts in females measured inthousand cells/L.

Blood Platelet Count

of Females

(thousand cells/L) f x2 f*x f*x2

100-199 25

200-299 92

300-399 28

400-499 0

500-599 2

n = = =

A. Complete the table and compute for the following: Mean, and Standard deviation.

B. What platelet counts would be considered unusually high and unusually low?