Question

Following are the marks obtained by 30 students in an examination :

15 16 44 27 7 37

20 17 47 25 11 47

8 20 38 28 21 23

9 24 36 30 31 20

10 30 40 19 41 17

Taking class intervals 0-10, 10-20, ..................., 40-50, construct a frequency table.

• A.

  C.I.	Tally Marks.	Frequency
  0-10 10-20 20-30 30-40 40-50	||| $||||╲||$ $||||╲||||$ $||||╲|$ $||||╲$	3 7 9 6 5

• B.

  C.I.	Tally Marks.	Frequency
  0-10 10-20 20-30 30-40 40-50	||| $||||╲||$ $||||╲||||$ $||||╲|$ $||||╲$	9 7 3 6 7

• C.

  C.I.	Tally Marks.	Frequency
  0-10 10-20 20-30 30-40 40-50	||| $||||╲||$ $||||╲||||$ $||||╲|$ $||||╲$	5 7 3 6 9

• D. None of these

Answer 1

Answer: (A)

C.I.	Tally Marks.	Frequency
0-10 10-20 20-30 30-40 40-50	||| $||||╲||$ $||||╲||||$ $||||╲|$ $||||╲$	3 7 9 6 5

Create class intervals $0-10$, $11-20$, $21-30$ an so on.and count the frequency in each interval:

C.I.	Tally Marks.	Frequency
0-10 10-20 20-30 30-40 40-50	||| $||||╲||$ $||||╲||||$ $||||╲|$ $||||╲$	3 7 9 6 5