Answer:
is by adding each frequency from a frequency distribution table to sum of its predecessos. the last value must equal to the total observe.
For example:
match table is 11, 8, 10, 7
so the cumulative total will be
11
11+8=19
19+10=29
29+7=36
this mean that the total of the match table is the sum of all numbers and each must equal to the cumulative data