Question

15. Cumulative frequency of a class in a frequency distribution table is :
(A) total of all frequencies
(B) sum of all frequencies prior to that class
(C) sum of all frequencies upto the class
(D) sum of frequencies after the class

Answer 1

Step-by-step explanation:

The cumulative frequency of 15 = 6 (Since, values ≤ 15 are 2, 10, 15, 15, 3, 15). The cumulative frequency of a class interval (overlapping or nonoverlapping) is the sum of the frequencies of earlier class intervals and the concerned class interval. For example: Consider the frequency distribution below.