Calculate the median for the following data.
Marks | 20 | 9 | 25 | 50 | 40 | 80 |
Number of students | 6 | 4 | 16 | 7 | 8 | 2 |
By arranging the data in table form,
Marks (x) | Number of students(f) | Cumulative frequency |
9 | 4 | 4 |
20 | 6 | 10 |
25 | 16 | 26 |
40 | 8 | 34 |
50 | 7 | 41 |
80 | 2 | 43 |
N = 43 |
N = 43 (odd number)
Median = value of the term
=
Median is the marks of 22nd student as we know students from 11th to 26th got 25 marks.
So the median value of observations is 25.