Answer
Systematic
Work Step by Step
The sample is voluntary so the sample may not be truly random so it is a poor sample. Also, we do not know who the email list will go to so thus a poor sample
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 12 - Data Analysis and Probability - Mid-Chapter Quiz - Page 749: 15
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