A researcher wants to determine the prevalence of Post-Traumatic Stress Disorder

Question

A researcher wants to determine the prevalence of Post-Traumatic Stress Disorder (PTSD) in Ontario paramedics who have worked continuously for ten years or more. She compiles a list of all paramedics in Ontario who fit these criteria and then randomly compiles a smaller list of paramedics whom she plans to contact.

a) Which part of this example describes a population?

b) Which part of this example describes a sample?

c) Many populations include distinct subgroups. List two subgroups that this researcher may need to consider in order to ensure proportional representation.

Explanation / Answer

a)

wants to determine the prevalence of Post-Traumatic Stress Disorder (PTSD) in Ontario paramedics who have worked continuously for ten years or more

b)

She compiles a list of all paramedics in Ontario who fit these criteria

c)

people who fit the criterias ( all paramedics in Ontario

people who dont fit the criterias

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