Question

Marks obtained by 50 boys of a class are as follows :33 52 10 25 53 55 11 42 4 34 47 21 39 25 32 19 10 16 41 36 15 30 27 59 30 8 6 17 40 49 52 54 40 31 45 24 30 34 52 36 12 16 9 40 42 3 6 44 26 45Construct a frequency distribution table with class-intervals 0-9, 10- 19, 20-29 and so on.Find number of students securing marks :1)more than 30 b) less than 19 c) How much percent of students have secured marks between 20 and 49?​

Answer 1

Explanation:

step -1 . write all the numbers in given there .

step -2 . 1)more than 30

then write all numbers which is more than 30 .

and totAl numbers se divide .

step -3)less than 19.

write all numbers which is less than 19 and divide total number se .

step -3 20 and 49 ke between numbers ko likho or all numbers se divide kro .

hope it's helpful