Activity No. 4:
Measures of Central Tendency for Ungrouped Data (Chose only 2)
1. A high school teacher at a small private school assigns trigonometry practice
problems to be worked via the net. Students must use a password to access the
problems and the time of log-in and log-off are automatically recorded for the teacher.
At the end of the week, the teacher examines the amount of time each student spent
working the assigned problems. The data is provided below in minutes.
15
28
25
48
22
43
49
34
22
33
27
25
22
20
39


Find the Mean, Median, and Mode for the above data.
What does this information tell you about students' length of time on the
computer solving trigonometry problems?
2.) Bailey has been playing golf on the weekends for the past three years. Recently, she
started keeping track of her recorded scores. Her scores for June and July at her
favorite 9-hole (par 36) golf course are provided below.
45
40
49
42


42
41
56
39
41
38
36
40
34
39
38
36
41
41
Find the Mean, Median, and Mode for the above data.
What does this information tell you about Bailey's golf game?
3.) Midterm exam scores for a small advanced neuroanatomy class are provided below.
Scores represent percent of items marked correct on the exam.
87
99


75
87
94
75
35
88
87
93
Find the Mean, Median, and Mode for the above data.
What does this information tell you about students' performance on the midterm
(the traditional grading scale is used)?
4.) A group committed to quality television has been concerned about a new talk show.
For two weeks, they decide to count the number of words that must be "bleeped" as too
obscene for television and the number of physical altercations. They hope that after
recording this data that they will be able to argue that the show is inappropriate for
television particularly during the day. The data for number of words censored is
provided below.
342


267
321
157
233
349
254
166
132
Find the Mean, Median, and Mode for the above data.
What does this information tell you about the talk show
289