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Question

The classes in a frequency distribution range from 110 to 170 with class interval being 10.

What is the Mid value of this Class Distribution?


A

145

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B

150

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C

140

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D

142.5

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Solution

The correct option is C

140


The Classes can be shown as :

110 - 120

120 - 130

130 - 140

140 - 150

150 - 160

160 - 170

There are 6 classes in total. The Mid value will be the intersecting point of the 3rd and 4th class

The mid value of the distribution is - 140

We can also find mid value by taking the sum of upper and lower limit and then dividing it by 2.


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