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Test 2

4.1 Quantitative Variables

1. Discrete: values of x have "gaps" between them (ex: test scores)

2. Continuous: no gaps between x values

Random Variable X

Assigns a number to outcomes of an experiment

4.2 Probability Distribution of a Discrete X

A table, graph, or forumla that shows the values of X and P(X) where:

4.3 Expected Value of Discrete X

1. The probability distribution of x represents a population (μ,σ^2,σ)

2. Mean of X = expected value of X

(1) Discrete in General

Variance of Discrete...

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