Construct the cumulative frequency distribution for the given data. Age (years) of Best Actress when award was won Frequency 20-29 26 30-39 36 40-49 13 50-59 3 60-69 7 70-79 1 80-89 2 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