Question

Compute mean meadian and the mode of the following table
Income₹ (more than). 0 10 20 30 40 50
Frequency. 64 58 42 31 16 5

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)