Question

The marks out of 20 scored by students of Standard 8 in mathematics are given below .find the frequency of 15. 15,14,18,19,15,15,16,15,16,15. ​

Answer 1

The frequency of 15 is= 5

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Answer 2

Answer:

Marks

Students(f)

Cumulative frequency(cf)

50

1

1

60

2

1+2=3

70

3

3+3=6

80

4

6+4=10

n=Σf=10

2

n

=

2

10

=5

2

n

=

2

10

=5

Therefore, the corresponding value of marks for 5 is 70.