Question

Test scores out of $100$ for a class of $20$ students are as follows:
$93,84,97,98,100,78,86,100,85,92,55,91,90,75,94,83,60,81,95$
Find the modal class.

• A. $91-100$
• B. $81-90$
• C. $71-80$
• D. None of these

Answer 1

Answer: (A)

$91-100$

Test scores	Frequency
$91-100$	$9$
$81-90$	$6$
$71-80$	$2$
$61-70$	$0$
$51-60$	$2$

As we know that modal class is the group interval that contains the highest frequency. And here it is clear that interval $91-100$ contains most of the students. Therefore, the modal class is $91 - 100$