Question

The weights (in kg) of 30 students of a
class are :
T
39, 38, 36, 38, 40, 42, 43, 44, 33, 33, 31, 45,
46, 38, 37, 31, 30, 39, 41, 41, 46,36, 35, 34,
39, 43, 32, 34, 29, 26
Prepare a frequency distribution table using
tally mark with one of class interval as 30-
st
(11) Which class interval has maximum
frequency?​

Answer 1

Answer:

Let us arrange the data in ascending order

32,35,36,37,38,38,38,40,42,43,43,43,45,47,50.

i) Mode = 38 and 43 as they occured the maximum number of times

Median = \left(\frac{n+1}{2}\right)^{th}\(

2

n+1

)

th

n = 15

\frac{15\ +\ 1}{2}

2

15 + 1

= \frac{16}{2\ }\ =\ 8th\ term

2

16

= 8th term

8th term = 40

Thus, mode of the data is 38 and 43

Median = 40

ii) Yes, the given data has two modes.