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Descriptive / Inferential Statistics Population Parameters: Any characteristic of a population. Not all populations can be characterized by the same set of parameters. Parameters are fixed! # Mean age of a 1st semester Business Student is 19.12 years. [17,18,20...] # Proportion of males in the Business Building is 47.2% [M, F, F, M, M ..]

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Descriptive / Inferential Statistics Sample Statistic: A value calculated from a sample to be used to infer an understanding of a population. # (Sample) Mean age of a student in this classroom which will be used to estimate the (population) mean age of a mean age of a 1st semester Business Student is 20.3 years. # (Sample) proportion of males in this classroom which will be used to estimate the (Proportion) of males in the Business Building is 53% # Concentration of white blood cell from a sample to diagnose a patient. # Mean life expectancy of a sample of Sony CD players for the purpose of setting a guarantee.

Descriptive / Inferential Statistics

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