Names: ________________________________________________________________ Date: _______
Probability & Statistics: 2.1 – 2.2 Practice Worksheet Mod: _______
PART 1: Directions: When constructing these frequency distributions, calculate the width and begin
with the lowest data value in the set. Be sure to follow the rules for a frequency distribution.
1. The number of total vetoes exercised by the past 20 Presidents is listed below. Use the data to
construct a grouped frequency distribution and a cumulative frequency distribution with 5 classes.
What is challenging about this set of data?
44 39 37 21 31 170 44 635 30 78
42 6 250 43 10 82 50 181 66 37
Grouped Frequency Distribution: Cumulative Frequency Distribution:
Class
Limits
Tally
Frequency
2. The data show the NFL team payrolls (in millions of dollars) for a specific year. Construct a
relative frequency distribution (including the midpoints & boundaries) for the payroll using 7
classes.
99 105 106 102 102 93 109 106 77 91 103 118 97 100
107 103 94 109 100 98 84 92 98 110 94 104 98 123
102 99 100 107
Class Limits
Boundaries
Midpoints
Tally
Frequency
Relative Frequency
Turn over …
Class
Boundaries
Cumulative
Frequency
