CBSE Class 10 Answered
Expert Answer
This is a more than type frequency distribution table. To find the median of this data, draw the graph of this data.
Now, total number of observations in this data, N = 40.
N/2 = 20.
In order to find the median, locate 20 on y-axis. From this point, draw a line parallel to the x-axis cutting the curve at a point. From this point, draw a perpendicular to the x-axis. The point of intersection of this perpendicular with the x-axis determines the median of the data. The median is some what approximately to 34.
The given data can be converted into a normal class interval frequency distribution as follows:
|
Class interval |
Frequency |
|
0 - 12 |
40 - 37 = 3 |
|
12 - 24 |
37 - 30 = 7 |
|
24 - 36 |
30 - 18 = 12 |
|
36 - 48 |
18 - 13 = 5 |
|
48 - 60 |
13 - 4 = 9 |
|
60 - 72 |
4 |
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