A grouped frequency table with class intervals of equal sizes usi… - Vidyadip

MCQ

A grouped frequency table with class intervals of equal sizes using $250-270$ ($270$ not included in this interval) as one of the class interval is constructed for the following data : $268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304, 402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236$. The frequency of the class $310-330$ is:

A
$4$
B
$5$
C
$7$
✓
$6$

✓

Answer

Correct option: D.

$6$

The class interval is $250 - 270, 270$ not included.
It means that the class is continuous.
Also, the data can be tabulated as follows:

Thus, frequency of the class $310 - 330$ is $6$ as can be seen from the table.

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