RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
EXPERIMENTAL VARIABLES IN PSYCHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All members of the target population have an equal chance of being selected.
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Every nth member of a target population is selected to be in a sample.
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The composition of the sample reflects the proportions of people in certain sub-groups (strata) within the target population / wider population.
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The researcher selects anyone who happens to be willing and available at the time of their study
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Involves participants selecting themselves to be a part of the sample.
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Detailed explanation-1: -What is stratified sampling? In stratified sampling, researchers divide subjects into subgroups called strata based on characteristics that they share (e.g., race, gender, educational attainment). Once divided, each subgroup is randomly sampled using another probability sampling method.
Detailed explanation-2: -Stratified random sampling has numerous applications and benefits, such as studying population demographics and life expectancy. Stratified random sampling is also called proportional random sampling or quota random sampling.
Detailed explanation-3: -Stratified random sampling is a form of probability sampling that provides a methodology for dividing a population into smaller subgroups as a means of ensuring greater accuracy of your high-level survey results. The smaller subgroups are called strata.
Detailed explanation-4: -Stratified sampling: In this type of sampling the population is divided into relatively homogeneous groups called strata based on their characteristics (gender, race, educational background). Once divided, each group is randomly sampled using another sampling method. It is suitable when the population is heterogeneous.
Detailed explanation-5: -Researchers use stratified sampling to ensure specific subgroups are present in their sample. It also helps them obtain precise estimates of each group’s characteristics. Many surveys use this method to understand differences between subpopulations better.