Examlex
When Billy is asked "What are you like?" he replies,"I am a good boy with brown hair." Two weeks earlier,Billy did not apply such labels to himself.Approximately how old would you guess Billy to be?
Discrete Random Variables
Variables in statistics that can take on a countable number of distinct values and are not continuous.
Simple Random Sample
A subset of individuals chosen from a larger set such that every individual has an equal chance of being selected.
Sample Proportion
The fraction of observations in a sample that belong to a certain category, serving as an estimate of the proportion in the population.
Bias
A systematic error or deviation from the truth in results or inferences.
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