A Stratified Random Sample Should Be Used When

question 2

Multiple Choice

A stratified random sample should be used when

• A) the population has identifiable subgroups that are of interest to the researcher
• B) the sample constitutes the population.
• C) the population is very small
• D) there is no way of estimating the probability that a particular subgroup will be included in the sample

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Definitions:

Normal Curve

A symmetrical, bell-shaped curve that represents the distribution of many types of data in which most values cluster around a mean value.

Curvilinear Relationship

A relationship between two variables that, if plotted out, will show a curve rather than a straight line.

Inferential Statistics

A field within statistics that employs a random sample from a larger population to describe and draw conclusions about that population.

Descriptive Statistics

Statistics that describe and summarize the data for a sample.