Introductory Statistics
PreQuiz #2
Objectives:
□
You will be able to sum marize data using measure of central tendency such as the mean, median, mode, and midrange
□
You will be able to determine which measure of central tendency is most appropriate for a data set
Name____________________
Date_______________________
Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than
that used for the observations.
1) The students in Hugh Logan
ʹ
s math class took the Scholastic Aptitude Test. Their math
scores are shown below. Find the mean score.
499
496
352
348
492
344
357
649
470
482
1)
2) Bill kept track of the number of hours he spent exercising each week. The results for four
months are shown below. Find the mean number of hours Bill spent exercising per week.
6.5
8.0
8.2
8.8
8.3
6.5
8.4
8.2
8.0
6.5
8.8
8.8
7.4
8.0
8.0
8.8
8.3
8.4
2)
Find the median for the given sample data.
3) A store manager kept track of the number of newspapers sold each week over a
seven

week period. The results are shown below.
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 Spring '11
 Lee
 Statistics, Mean, Median, Mode, Mean, dropout rates, high school dropout

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