National EMSC Data Analysis Resource Center
National EMSC Data Analysis Resource Center
Fortunately, you don't have to collect information for evey member of your population. There is a much more efficient and cost-effective way to gather your information. This method is called 'probability sampling.' If designed and implemented well, probability sampling will yield accurate results about your population.
A ‘probability sample’ is:
- A subgroup of the entire population chosen using random selection.
Many times, the term 'random selection' is taken to mean 'haphazard selection.'
However, ‘random selection’ is:
- A technical term that means each eligible subject has a specific and known probability of being included in your sample.
There are several types of probability sampling, such as:
Tweet
rev. 04-Aug-2022
Disclaimer | Website Feedback | U of U
© NEDARC 2010
This website is supported by the Health Resources and Services Administration (HRSA) of the U.S. Department of Health and Human Services (HHS) as part of the Emergency Medical Services for Children Data Center award totaling $3,200,000 with 0% financed with non-governmental sources. The contents are those of the author(s) and do not necessarily represent the official views of, nor an endorsement, by HRSA, HHS, or the U.S. Government. For more information, please visit HRSA.gov.
(In accordance with the Americans with Disabilities Act, the information in this site is
available in alternate formats upon request.)
