The Histograms Represent the Probability Distributions of the Random Variables

question 146

Multiple Choice

The histograms represent the probability distributions of the random variables X and Y. Determine by inspection which probability distribution has the larger variance.

• A) a
• B) b

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Definitions:

Frequency Distribution

A summary of how often different values occur within a data set, typically organized into a table or represented graphically.

Percent Frequency

The frequency of a specific event or category expressed as a percentage of the total number of events or categories.

Frequency Distribution

A summary of data showing the frequency (or number) of observations in each of several non-overlapping categories or bins.

Class Width

The difference between the upper and lower boundaries (or real limits) of any class/interval in a frequency distribution.