Compute the median for the following data:

Marks        (more than or equal to) Number of students
80 150
90 141
100 124
110 105
120 60
130 27
140 12
150 0

Asked by Topperlearning User | 10th Apr, 2014, 01:40: PM

Expert Answer:

First prepare the cumulative frequency table:

   
Marks
No. of students
Cumulative frequency
80 - 90
150 – 141 = 9
9
90 – 100
141 – 124 = 17
9 +17 = 26
100 - 110
124 – 105 = 19
26 +19 = 45
110 - 120
105 – 60 = 45
45 + 45 = 90
120 -130
60 – 27 = 33
90 + 33 = 123
130 – 140
27 – 12 = 15
123 + 15 = 138
140 -150
12- 0 = 12
138 + 12 =150
 

Answered by  | 10th Apr, 2014, 03:40: PM