The following table gives the height of 100 pupils in a school :
Height (in cm) 120 - 130 130 - 140 140 - 150 150 - 160 160 - 170
No. of pupils
2014
170 - 180
Change the above distribution to more than type distribution and draw its ogive. Also find th
median heights
Answers
Given : height of 100 pupils in a school :
Height (in cm) 120 - 130 130 - 140 140 - 150 150 - 160 160 - 170 170 - 180
No. of pupils 12 16 30 20 14 8
To Find : more than type distribution
Solution:
Height (in cm) f cf ( More than )
120 - 130 12 100
130 - 140 16 88
140 - 150 30 72
150 - 160 20 42
160 - 170 14 22
170 - 180 8 8
More than ogive
The points with the Lower limits of the class are plotted on x axis and the corresponding more than cumulative frequencies on y axis.
The points are joined by free hand smooth curve to give more than cumulative frequency curve or the More than Ogive
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