The Essentials of Statistics: A Tool for Social Research
The Essentials of Statistics: A Tool for Social Research
4th Edition
ISBN: 9781305802698
Author: Joseph F. Healey
Publisher: Cengage Learning US
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Chapter 3, Problem 3.12P

SW Compute the median and mean for both the pretest and posttest for the test scores first presented in problem 2.6 and reproduced here. Interpret these statistics.

Case Pretest Posttest
A 8 12
B 7 13
C 10 12
D 15 19
E 10 8
F 10 17
G 3 12
H 10 11
I 5 7
J 15 12
K 13 20
L 4 5
M 10 15
N 8 11
O 12 20
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