Construct the cumulative frequency distribution for the given Age (years) of Best Actress when Cumulative data. award was won Frequency Age (years) of Best Actress when Less than 30 award was won Frequency 20-29 29 Less than 40 30-39 33 Less than 50 40-49 50-59 Less than 60 60-69 Less than 70 70-79 80-89 Less than 80 Less than 90