Question

10 The scores in Science test (out of 25) of 15 students is as follows.
19, 25, 23, 20,9, 20, 15, 10,5, 16, 25, 20, 24, 12, 20
Find the median and mode of this data? Are they same?​

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

`=(text(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:

Step-by-step explanation:

Data science is an inter-disciplinary field that uses scientific methods, processes, algorithms and systems to extract knowledge and insights from many structural and unstructured data. Data science is related to data mining, machine learning and big data.