Q. 84.1( 18 Votes )
Let L be the lower class boundary of a class in a frequency distribution and m be the midpoint of the class. Which one of the following is the upper class boundary of the class?
C. 2m – L
D. m – 2L
Mid-point of class = m
We know that,
Mid-point = upper class limit + lower class limit)
m = upper class limit + lower class limit)
lower class limit = l (given)
upper class limit + l = 2m
upper class limit = 2m – l .
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