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Survey Methods
In this lecture, I will go over survey methods. I will discuss various methods to generate questionnaire, kinds of errors in surveys (Contrast Error, Halo error). I will also discuss the advantages and disadvantages of survey methods in usability. Lecture Slides

Required Readings
Using the Web as a Survey Tool: (From the GVU WWW surveys. Good general read.)
Questionnaires in usability engineering (Good discussion, some specific advice about questionniare design)

American Statistical Institute: Survey Methodology Section "Home of the "What is a Survey Series"
Recommended Readings
Article on survey
Discussion of survey methods
Survey Analysis Software (for estimating margin of errors in more complex sampling methods)
Index of Sites related to survey research
Online Lecture on Survey Sample Size
20 questions a journalist should ask about public polls: A good discussion of the kind of things that need to be taken into consideration when evaluating a survey. From the National Council of Public Polls