Question

). A boy scored the following marks in various class tests during a year.
each test being marked out of 20.
15, 17, 16, 7, 9, 12, 14, 16, 3, 19, 12, 16
i.
What are his mean marks?
ii.
What are his modal marks?
iii.
What are his median marks?​

Answer 1

Step-by-step explanation:

ANSWER

7,10,12,12,14,15,16,16,16,17,19

Here the number of observations, n=11 which is odd.

So Median=((n+1)/2)

th

term

=(11+1)/2

=12/2

=6

th

term

=15

Hence the median is 15.

Answer 2

1. 13

2. 19

3. 14.5

Sorry I can't send the full explanation