Question

Question No. 5
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For the data given below:
so
Marks obtained
Below 10
Below 20
Below 30
Below 40
Below 50
No. of students
5
16
28
42
72
. if x is the class mark of the modal class and y is the upper limit of the median class, then the value of
(2x + y)
15
O 130
O 125
mark for Review & Nerd
Prev
Clear Response
Version - 1720521
hp​

Answer 1

Answer:

In the given frequency distribution , h=10

Class 20−30 has maximum frequency. i.e., 25

Therefore, 20−30 is the model class in which l=20 and f

m

=25.

Here, f

1

=12 and f

2

=13

Mode=l+(

2f

m

−f

1

−f

2

f

m

−f

1

)×h

=20+(

50−12−13

25−12

)×10

=20+

25

130

=20+5.2

=25.2 (Ans)

Step-by-step explanation:

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