Construct the cumulative frequency distribution for the given data. Age (years) of Best Actress when award was Cumulative Frequency Age (years) of Best Actress when award was won Frequency won 20-29 26 Less than 30 30-39 37 40-49 15 Less than 40 50-59 2 Less than 50 60-69 -NAN Less than 60 70-79 80-89 Less than 70 Inco Less than 80 Less than 90 X