10.1 Frequency Distributions - 3/31/2008 Definitions Intro...

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3/31/2008 1 Intro to Statistics and Frequency Distributions Finite Mathematics Section 10.1 Definitions z Statistics :A collection of methods for planning experiments; obtaining data; organizing, summarizing, presenting, analyzing, and interpreting the data; and drawing conclusions. z Descriptive Statistics: The collection Descriptive Statistics : The collection, organization, analysis, summarization, and presentation of data. z Inferential Statistics: Generalizing from samples to populations using probabilities; performing hypothesis testing, determining relationships between variables, and making predictions. Definitions, Continued z Population vs. Sample: A population includes all objects of interest whereas a sample is only a portion of the population. z Parameters are associated with populations and statistics with samples Parameters are usually statistics with samples. Parameters are usually denoted using Greek letters (μ and σ ) while statistics are usually denoted using Roman letters (x, s).
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10.1 Frequency Distributions - 3/31/2008 Definitions Intro...

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