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Chapter V Terms
Vocabulary and terms on Chapter V of Elementary Statistics
5
Mathematics
Undergraduate 1
10/28/2010
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Term
Random Variable
 Definition
A variable whose values are determined by chance.
Term
Discrete Probability Distribution
 Definition
Consists of the values a random variable can assume and the corresponding probabilities of the values. The probabilities are determined theoretically or by observation.
Term
Expected Value
 Definition

(of a discrete random variable of a probability distribution).The theoretical average of the variable.

 

μ = E(X) = ΣX*P(X)
Term
Binomial Experiment
 Definition

A probability experiment that satisfies the following four requirements: 

 

1. There must be a fixed number of trials

2. Each trial can only have two outcomes or outcomes that can be reduced to two.

3. The outcomes of each trial must be independent of one another.

4.The probability of a success must remain the same for each trial.
Term
Binomial Distribution
 Definition
The outcomes of a binomial experiment and the corresponding probabilities of these outcomes.
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