Question

The scores in mathematics test of 15 students is as follows 19,25,23,20,09,20,15,10,5,6,25,20,24,12,20 then find the following 1)Range 2)Mean 3)Mode 4)Median


please help me guyzz​

Answer 1

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.

Answer 2

Answer:

1. Range: 25-5=20

2. Mean: Add all the scores then divide by total number of scores

253÷15=16,86

3. Mode: 20

4. Median: 20