Given the data below:

 

87, 81, 96, 75, 82, 74, 99, 51, 64, 72, 63, 59, 77, 88, 99, 66, 55, 50, 70, 73.

1(5). Construct a frequency distribution table with class width of 10, class boundaries as: 50-60, 60-70,..., 90-100. Calculate count, percentage, and cumulative percentage for each class.

2(5). Sketch a histogram plot for above data using the frequency distribution table in part 1.

3(5). Construct a stem-leaf plot using the data. Stem: tens digit, leaf: ones digit.