Answer:

solution=:Correct option is A)

given that

the weights (in kg) of 15 students are

31,35,27,29,32,43,37,41,34,41,34,28,36,44,45,42,30

No' of observations (n) =15

arrange the data is ascending order

27,28,29,30,31,32,34,35,36,37,41,42,43,44,45

Here observe that No' of students are odd i.e n=15

Median =

2

n+1

th term =

n

15+1

th term

=8 th term

∴median=35

if weight 44kg is replaced by 46kg and

27kg by 25kg

then new Data is

25,28,29,30,31,32,34,35,36,37,41,42,43,46,45

Arrange data the ascending order

25,28,29,30,31,32,34,35,36,37,41,42,43,45,46

Here observe that no's of students are odd i.e n=15

So

new median is

2

n+1

th term

=

2

15+1

th term

=8th term

=35

∴ new median =35kg ..

..... IHOPthisishelpfulforyou

Answer:

This is the answer

25 is the median.