Question

In the class marks of a frequency distribution are 29.5, 36.5, 43.5, 50.5 then find the class interval corresponding to the class marks 36.5?

Answer 1

class size of the frequency distribution=36.5-29.5=7 and half of class size=7/2=3.5therefore the class interval corresponding to 36.5 would be36.5+3.5=4036.5-3.5=33i.e.33-40 are the class intervals