Wednesday, September 26, 2012
Welcome to How to Design and Evaluate Research in Education
This comprehensive introduction to research methods was designed to present the basics of educational research in as interesting and understandable a way as possible. To accomplish this, we've created the following features for our chapter which is more focused on the sampling and data collection.
Objectives of this chapter will enable you to:
- Distinguish between a sample and population
- Explain what is meant by "random sampling" and describe three ways of obtaining a random sample
- use a table of random numbers to select a random sample from a population
- Explain how stratified random sampling differs from cluster random sampling
- Explain what is meant by "systematic sampling, convenience sampling and purposive sampling"
- Explain what is meant by sample size
- Explain what is meant by "external validity"
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