7 Randomness and sampling

Sampling is the process of collecting actual data for a student. This is something that must be well thought out before you start data collection. The process includes both which specific data you will collect and how much data you will collect.

Sampling is a large topic: the Sage research data base has 7 full books with “Sampling” in the title and that is just the beginning. because many of the works on specific methods go into great detail about the sampling methods (and theory)  used with those methods.

Video 1

https://www.dropbox.com/scl/fi/2v68e6gfqhlkeu2tv2u7w/nonprobabilitysamplingvideo.mp4?rlkey=md0kg097pu93dj4ojxqyy5k6b&dl=0

 

Video 2

https://www.dropbox.com/scl/fi/wwds2ulaph08454r7ulf8/probabilitysampling.mp4?rlkey=ggtu0u0n15286ij9wkia76yzv&dl=0

### Websites

Take some time to explore these three demonstration apps.

https://openintro.shinyapps.io/CLT_mean/

https://www.zoology.ubc.ca/~whitlock/Kingfisher/CLT.htm

https://openintro.shinyapps.io/CLT_prop/

Notice how the three variables: population distribution,  sample size and number of samples Influence the sampling distributions.

Play with: https://elinw.shinyapps.io/shinyRandomization/

Explore random assignment (as in experiments)

 

https://cress.soc.surrey.ac.uk/samp/
•Provides a way to compare estimates for different designs.

Read

The sampling chapter from one of the text books:
Bhattacherjee,Chapter 8 (pp 75-80)
Blackstone Chapter 7.
Trochim Sampling
Overview book
Daniel, J. (2012). Sampling Essentials: Practical Guidelines for Making Sampling Choices. SAGE Publications, Inc. https://doi.org/10.4135/9781452272047
Specific methods
Emmel, N. (2013). Sampling and Choosing Cases in Qualitative Research: A Realist Approach. SAGE Publications Ltd. https://doi.org/10.4135/9781473913882
Kalton, G. (1983). Introduction to Survey Sampling. SAGE Publications, Inc. https://doi.org/10.4135/9781412984683
More about theoretical sampling
Conlon, C., Timonen, V., Elliott-O’Dare, C., O’Keeffe, S., & Foley, G. (2020). Confused About Theoretical Sampling? Engaging Theoretical Sampling in Diverse Grounded Theory Studies. Qualitative Health Research, 30(6), 947–959. https://doi.org/10.1177/1049732319899139

 

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Research Methods for Lehman EdD Copyright © by elinwaring. All Rights Reserved.

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