Question

the scores in mathematics test of 10 students is as following 19, 23, 20,15,10,16,25,20,24,30​ find the mean of the data​

Answer 1

Answer:

Correct answer -

Mean = 20.2

Answer 2

Answer:

: The scores can be arranged as follows:

Score Tally marks No. of Students

5 | 1

9 | 1

10 | 1

12 | 1

15 | 1

16 | 1

19 | 1

20 |||| 4

23 | 1

24 | 1

25 || 2

Total 15

Score occurring most number of times = 20

Hence, mode = 25

Median can be calculated as follows:

We have odd number of scores = 15

So, position of median

=

Number of scores

+

1

2

=

15

+

1

2

=

8

The eighth score is shown below in bold:

5, 9, 10, 12, 15, 16, 19, 20, 20, 20, 20, 23, 24, 25, 25

Hence, median = 20

In this case, median and mode are same