MathTIMES Questions

 

Practice Problems: Measures of Central Tendency 

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.

Data	Array
15	49
28	48
25	43
48	39
22	34
43	33
49	28
34	27
22	25
33	25
27	22
25	22
22	22
20	20
39	15

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.

Data	Array
45	56
49	49
42	45
56	42
41	42
36	41
34	41
38	41
41	41
40	40
42	40
41	39
39	39
38	38
40	38
39	36
36	36
41	34

 

 3. Midterm exam scores for a small advanced neuroanatomy class are provided below. Scores represent percent of items marked correct on the exam.

Data	Array
87	99
99	94
75	93
87	88
94	87
75	87
35	87
88	75
87	75
93	35

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.

Data	Array
342	349
267	342
321	321
157	289
33	267
254	254
166	166
132	157
289	132
349	33