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The frequency distribution table for ‘more than’ type is:
MARKS
CUMULATIVE FREQUENCY (Cf)
More than 0
98 + 2 = 100
More than 5
93 + 5 = 98
More than 10
87 + 6 = 93
More than 15
79 + 8 = 87
More than 20
69 + 10 = 79
More than 25
44 + 25 = 69
More than 30
24 + 20 = 44
More than 35
6 + 18 = 24
More than 40
2 + 4 = 6
More than 45
2
Plotting points for ‘less - than ogive’ and ‘more - than ogive’ on the graph,
In this type of graph where ‘less than ogive’ and more than ogive’ are plotted in the same graph, median is found on x - axis by the intersection of these two ogives.
Here, median = 29.5
MARKS
CUMULATIVE FREQUENCY (Cf)
More than 0
98 + 2 = 100
More than 5
93 + 5 = 98
More than 10
87 + 6 = 93
More than 15
79 + 8 = 87
More than 20
69 + 10 = 79
More than 25
44 + 25 = 69
More than 30
24 + 20 = 44
More than 35
6 + 18 = 24
More than 40
2 + 4 = 6
More than 45
2
Plotting points for ‘less - than ogive’ and ‘more - than ogive’ on the graph,
In this type of graph where ‘less than ogive’ and more than ogive’ are plotted in the same graph, median is found on x - axis by the intersection of these two ogives.
Here, median = 29.5
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