A grouped frequency distribution table with classes of equal size… - Vidyadip

MCQ

A grouped frequency distribution table with classes of equal sizes using $63-72 (72$ included$)$ as one of the class is constructed for the following data $30, 32, 45, 54, 74, 78, 108, 112, 66, 76, 88, 40, 14, 20, 15, 35, 44, 66, 75, 84, 95, 96, 102, 110, 88, 74, 112, 14, 34, 44.$ How many classes can we have$?$

A
$12$
B
$11$
✓
$10$
D
$9$

✓

Answer

Correct option: C.

$10$

The given frequency varies from $14$ to $112.$
So the class intervals are:
$13-22, 23-32, 33-42, 43-52, 53-62, 63-72, 73-82, 83-92, 93-102, 103-112.$
Number of class interval $= 10.$

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