Question

the class marks of a distribution are 15 20 25 ....45 the class corresponding to 45 is​

Answer 1

Step-by-step explanation:

Given class mark (xi) of a distribution are 15,20,25.....45

class size (h)=different between consecutive class

mark

=20-15

=5

class limits of (xi=45)

(xi-h/2,xi + h/2)

=(45 - 5/2, 45 + 5/2)

=(45 - 2.5, 45 + 2.5)

=(42.5 , 47.5)

hope it helped you