Examlex
Identify the six classes of people identified by W.Lloyd Warner to describe groups of people who were approximately equal in community esteem and which was used by marketers to describe social structure in the population.
Type I Error
Erroneously dismissing a true null hypothesis, often called a "false positive."
Sample Mean
The average obtained from a sample, calculated by summing all sample data points and dividing by the number of points.
Null Hypothesis
A statement or assumption that there is no effect or no difference, and is the hypothesis that researchers aim to test against.
Hypothesized Value
A specific value or condition proposed in a hypothesis that is tested through statistical analysis.
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