Quiz 4 flashcards
Which of the following terms is defined as: “the entire set of elements in which we are interested?”
population
Suppose a researcher is interested in studying the effect of having an additional teacher in a classroom on student achievement. They begin their strategy by listing all schools in a particular state, select a random sample of those schools, then select a random sample of classrooms within those schools. After the sample is finalized, the researcher contacts teachers from those classrooms in order to collect information on student achievement before an additional teacher is added to the classroom. Which of the following best represents the secondary sampling unit for this study?
Teachers / classrooms
Sample generalizability refers to:
When a conclusion based on a sample, or subset, of a larger population holds true for that population.
The term “representative sample” refers to:
A sample that looks similar to the population from which it was selected in all respects that are potentially relevant to the study.
The term “sampling error” refers to:
Any difference between the characteristics of a sample and the characteristics of the population from which it was drawn.
The term “target population” refers to:
A set of elements larger than or different from the population sampled and to which the researcher would like to generalize study findings.
Which of the following best describes a systematic random sampling method?
Sampling methods are selected from a list, them every nth element is selected after the first element is selected randomly within the first interval.
Which of the following best describes a simple random sampling method?
Sampling elements are added to a list and each is assigned a random number. Elements are then selected randomly using a random number table.
Which of the following best describes a proportionate stratified random sampling method?
Sample elements are separated into different strata based upon some important characteristic. Elements are then selected equally from each strata.
Which of the following terms best represents a sampling method which selects elements to ensure that the sample represents certain characteristics in proportion to their prevalence in the population?
Quota sampling
