Learn more about the different types of samples and how to ensure external validity. (
http://www.gifted.uconn.edu/siegle/research/Samples/instructornotessamples.htm
)
This online text discusses how to use sampling strategies to collect reliable data about a large group by sampling the characteristics of a smaller group. The material covers types of sampling processes and includes a chart that compares the advantages and disadvantages of each. (
http://education.calumet.purdue.edu/vockell/research/chapter8.htm
)
From Cornell University, this Web based text addresses topics in social research methods. This chapter explains sampling and statistical terminology and discusses probability and non-probability sampling methods. (
http://www.socialresearchmethods.net/kb/sampling.htm
)
The Internet Glossary of Statistical Terms accompanies a computer tutorial based on the book, Statistics Explained, by Professor Howard S. Hoffman. (
http://www.animatedsoftware.com/elearning/Statistics%20Explained/glossary/se_glossary.html
)
The Internet Glossary of Statistical Terms accompanies a computer tutorial based on the book, Statistics Explained, by Professor Howard S. Hoffman. The glossary contains the term "population." (
http://www.animatedsoftware.com/statglos/sgpopula.htm
)
The Internet Glossary of Statistical Terms accompanies a computer tutorial based on the book, Statistics Explained, by Professor Howard S. Hoffman. The glossary contains the term "random sample." (
http://www.animatedsoftware.com/statglos/sgrandsa.htm
)