Question

If the class mid points in a frequency distribution of a group of persons are: 125, 132, 139, 146, 153, 160, 167, 174, 181 pounds, then the size of the class is:

a) 6

b) 8

c) 7 

d) 9 

Answer 1

If the class mid points in a frequency distribution of a group of persons are: 125, 132, 139, 146, 153, 160, 167, 174, 181 pounds, then the size of the class is 7. 

Comments

Please you explain how u got the 7