If the Range of a Distribution Were 89 and the Data

question 20

Multiple Choice

If the range of a distribution were 89 and the data were reported as whole numbers, what would the width of the class interval be if one chose to group the distribution into approximately 14 class intervals?

• A) 14
• B) 89
• C) 5
• D) 6
• E) 7

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Definitions:

Poisson Distribution

A distribution for predicting the probability of a given number of events occurring over a fixed interval of time or space.

Normal Distribution

A probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Binomial Distribution

A probability distribution that summarizes the likelihood that a value will take one of two independent values under a given set of parameters or assumptions.

Random Variable

A factor that acquires numerical values due to chance occurrences.