Stratified Sampling; Validity vs Reliability
Not what you're looking for?
What are the benefits of stratified sampling?
Discuss the differences between validity and reliability.
Purchase this Solution
Solution Summary
This solution explains what the benefits of stratified sampling are and discusses the differences between validity and reliability.
Solution Preview
What are the benefits of stratified sampling?
1. Focuses on important subpopulations and ignores irrelevant ones.
2. Allows use of different sampling techniques for different subpopulations.
3. Improves the accuracy/efficiency of estimation.
4. Permits greater balancing of statistical power of tests and of differences between strata by sampling ...
Purchase this Solution
Free BrainMass Quizzes
Writing Business Plans
This quiz will test your understanding of how to write good business plans, the usual components of a good plan, purposes, terms, and writing style tips.
Managing the Older Worker
This quiz will let you know some of the basics of dealing with older workers. This is increasingly important for managers and human resource workers as many countries are facing an increase in older people in the workforce
Marketing Research and Forecasting
The following quiz will assess your ability to identify steps in the marketing research process. Understanding this information will provide fundamental knowledge related to marketing research.
Production and cost theory
Understanding production and cost phenomena will permit firms to make wise decisions concerning output volume.
Six Sigma for Process Improvement
A high level understanding of Six Sigma and what it is all about. This just gives you a glimpse of Six Sigma which entails more in-depth knowledge of processes and techniques.