Q. 53.7( 6 Votes )

# In a frequency distribution, the mid value of a class is 15 and the class interval is 4. The lower limit of the class is

A. 10

B. 12

C. 13

D. 14

Answer :

Mid value =

15 =

30 = (x + x -4)

34 = 2x

x = 17

Lower class limit = 17 -4 = 13

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