Question

(2) The table below shows the children in a
class sorted according to their marks in
the math exam:
Marks
No. of Children
0 - 10
4
10 - 20
8
20 - 30
10
30 - 40
9
40 - 50
5
Calculate the median mark of the class.​

Answer 1

Answer:

median = 26

Step-by-step explanation:

table:

no.of students

0-10

10-20

20-30

30-40

40-50

marks

4

8

10

9

5

cumulative frequency

4

12

22

31

36

n/2=36/2

n/2=18

median = l+ [n/2-cf/f]*h

=20+[18-12/10] multiple 10

=20+[18-12]

=20+6

=26

median =26