A Market Research Team Compiled the Following Discrete Probability Distribution

question 2

Multiple Choice

A market research team compiled the following discrete probability distribution for families residing in Randolph County. In this distribution,x represents the number of evenings the family dines outside their home during a week. The standard deviation of x is _______________.

• A) 1.00
• B) 2.00
• C) 0.80
• D) 0.89
• E) 1.09

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Definitions:

Z-score

A calculation that determines how a particular value's distance from the mean of a set of values is expressed in standard deviations.

Outlier

An observation in data that is significantly different from the majority of the data, potentially due to variability in the measurement or an experimental error.

Median

The middle value in a data set, when the values are arranged in ascending or descending order, or the average of the two middle numbers when the dataset has an even number of observations.

Third Quartile

The value below which 75% of the data in a data set lie, representing the upper quartile of a distribution.