HLTB15H3 Lecture Notes - Standard Deviation, Sample Size Determination, Sampling Frame

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Published on 17 Apr 2013
School
UTSC
Department
Health Studies
Course
HLTB15H3
Professor
HLTB15 WINTER 2013
LECTURE # 7 SAMPLING METHODS QUESTIONS
ANSWER KEY
What is sampling?
Sampling is the process of taking a small group of members from a larger population
in order to produce a sample that is representative (or as close as you can make it)
of the larger population you wish to study.
What are the advantages of sampling?
It is more COST EFFECTIVE and LESS LABOUR INTENSIVE in terms or resources
and human input
What are the disadvantages of sampling?
It is never going to be EXACT to the population’s statistics. It is only and
ESTIMATION or PREDICTION so there is a possibility of ERROR.
What is saturation point?
In qualitative studies, sampling of the population continues until you have
exhausted all possible new information. This differs person to person due to a whole
host of factors (time, expertise, cost, scope) so it’s a very subjective measure.
What is population/study sample (N)?
It is the population we wish to study.
What is Sample Size (n)?
Sample size is a statistical sample of the studied larger population.
What is Sampling Design/Strategy?
This is the method or process with wish you select members of the sampling frame
to become part of the sample.
What is Sampling Unit or Sampling Element?
Check slide 6 of Lecture 7
What is Sampling Frame***
All possible items/people that can be chosen from the population to be part of the
sample.
What are Sample Statistics?
Statistics derived from the sample chosen from the larger population.
What is Population Parameters or Population Mean?
True features and statistics of the population in question.
What are the THREE Principles of SAMPLING?
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Document Summary

It is more cost effective and less labour intensive in terms or resources and human input. It is never going to be exact to the population"s statistics. Estimation or prediction so there is a possibility of error. In qualitative studies, sampling of the population continues until you have exhausted all possible new information. This differs person to person due to a whole host of factors (time, expertise, cost, scope) so it"s a very subjective measure. It is the population we wish to study. Sample size is a statistical sample of the studied larger population. This is the method or process with wish you select members of the sampling frame to become part of the sample. All possible items/people that can be chosen from the population to be part of the sample. Statistics derived from the sample chosen from the larger population. True features and statistics of the population in question.

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