Construct the cumulative frequency distribution for the given data.
Age (years) of Best Actress when award was won 
Frequency 

2029 
2828 

3039 
3737 

4049 
1414 

5059 
22 

6069 
77 

7079 
22 

8089 
22 
Age (years) of Best Actress when award was won 
Cumulative Frequency 
Less than 30 
nothing 
Less than 40 
nothing 
Less than 50 
nothing 
Less than 60 
nothing 
Less than 70 
nothing 
Less than 80 
nothing 
Less than 90 
nothing 
Using given frequencies we calculate cumulative frequency
Age (years) of Best Actress When award was won  Cumulative Frequency 

Less than 30 
28 
Less than 40  = 28 + 37 = 65 
Less than 50  = 65 + 14 = 79 
Less than 60  = 79 + 2 = 81 
Less than 70  = 81 + 7 = 88 
Less than 80  = 88 + 2 = 90 
Less than 90  = 90 + 2 = 92 
Note:
Cumulative Frequency : Cumulative frequency is defined as a running total of frequencies. Cumulative frequency can also defined as the sum of all previous frequencies up to the current point.
In above frequency table there is a repetation of frequency that means 28 written as 2828 and 37 as 3737 so calculating cumulative frequency we not consider frequencies are 28, 37, 14, 2, 7, 2, 2
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