Study guide exam 3 research

Chapter 10: (sampling & data collection in QUANITATIVE studies)
1. Basic Sampling Concepts (population, sample, sampling):
 Population:
o Aggregate of cases in which a researcher is interested
o Entire group of interest
o Target population: is the entire population of interest
o Accessible population: is the portion of the target population that is accessible to the researcher from
which a sample is drawn
 Example: a researcher’s target population might be all diabetic patients in the unites states, but in
reality, the population that is accessible might be diabetic patients in a particular hospital
o Populations consist of subpopulations or STRATA:
 which are mutually exclusive segments of a population based on a specific characteristic such as
male or female
 Example: A population consisting of all RN’s in the U.S. could be divided into two strata based
on gender
o Characteristics that define the population are through eligibility criteria:
 Inclusion criteria: