The grades which students gained after passing the exam are shown in the table below. Create the grouped frequency distribution table with class boundaries using all steps.

68 78 94 54 67 77 96 100 97 86

87 76 77 98 99 78 65 64 79 90

80 79 72 71 64 62 53 100 65 84

Problem #2 

The length of time (in months) between the onset of a particular illness and its recurrence was recorded for 50 patients, Create the Grouped frequency distribution table with class boundaries using all steps.

2.1 4.4 2.7 32.3 9.9 9.0 2.0 6.6 3.9 1.6

14.7 9.6 16.7 7.4 8.2 19.2 6.9 4.3 3.3 1.2

4.1 18.4 .2 6.1 13.5 7.4 .2 8.3 .3 1.3

14.1 1.0 2.4 2.4 18.0 8.7 24.0 1.4 8.2 5.8

1.6 3.5 11.4 18.0 26.7 3.7 12.6 23.1 5.6 .4