The Complete Idiot's Guide to Statistics by Robert A. Donnelly Jr. Ph.D

Author:Robert A. Donnelly, Jr., Ph.D.
Language: eng
Format: epub, pdf
Publisher: Penguin USA, Inc.
Published: 2010-02-26T05:00:00+00:00

Wrong Number

Have you ever participated in an online survey on a sports or news website that allowed you to view the results? These surveys can be fun and interesting, but you need to take the results with a grain of salt. That’s because the respondents are self-selected, which means the sample is not randomly chosen. The results of these surveys are most likely biased because the respondents would not be representative of the population at large. For example, people without Internet access would not be part of the sample and might respond differently than people with access to the Internet.

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