The years of experience of 100 workers in a factory ranges from 5 to 35 years. The
table below shows the descending cumulative frequency distribution for the workers according to
the years of experience. Fill in the frequency table below.
To find the frequency for each set of years, find the difference between the corresponding cumulative frequency and the cumulative frequency that follows. For example, to find the frequency for the set , subtract the cumulative frequency for 10 and more from the cumulative frequency for 5 and more.
Use the data to complete the frequency table.