Which is most applicable to use if an investigator wants to determine in which of the class limit fall one-tenth,three-tenth, etc.,. Of the cases of distribution?
Answers
Given : An investigator wants to determine in which of the class limit fall one-tenth, three-tenth, etc.,. Of the cases of distribution
To Find : What method is most applicable
Solution:
Draw OGive Graph
Less than O Give
The points with the upper limits of the class are plotted on x axis and the corresponding less than cumulative frequencies on y axis.
The points are joined by free hand smooth curve to give less than cumulative frequency curve or the less than Ogive
one-tenth, = 10 % of total frequency
Hence locate 10 % of total frequency on y axis
draw a horizontal line parallel to x axis passing through that point and intersecting
Ogive graph at some point.
From the point draw vertical line parallel to y axis and intersecting x axis
at that point
Check that point lies in which class from the values on x axis
Similarly for any other percentile
for median find 50 %
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