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  4. If in a frequency distribution table with 12 classes, the width of each class is 2.5 and the lowest class boundary is 6.1, then what is the upper class boundary of the highest class?

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Q. If in a frequency distribution table with 12 classes, the width of each class is 2.5 and the lowest class boundary is 6.1, then what is the upper class boundary of the highest class?

Statistics

Solution:

Given : lowest class boundary = 6.1
Class width = 2.5, Number of classes = 12.2
$\Rightarrow $ Upper class boundary of the highest class = 6.1 + (2.5 $\times $ 12) = 6.1 +30 = 36. 1