Question

The frequency distribution of a variate X is as given below:

X	$2$	$3$	$4$	$5$	$6$
frequency	$2$	$7$	$14$	$22$	$30$

What is the cumulative frequency of variate $X=5$?

• A. $36$
• B. $44$
• C. $45$
• D. $52$

Answer 1

The correct option is C $45$

$X$	$Frequency$	$Cumulativefrequency$
$2$	$2$	$2$
$3$	$7$	$2+7=9$
$4$	$14$	$9+14=23$
$5$	$22$	$23+22=45$
$6$	$30$	$45+30=75$

$\therefore$ The cumulative frequency of variate $X=5$ is $45$.