A Study Was Conducted on the Percent of Total Advertising

question 126

Multiple Choice

A study was conducted on the percent of total advertising dollars spent by ten local firms for advertising in the press and on cable television. Results were ranked with a resulting sum of squared differences equal to 128. What is Spearman's coefficient of rank correlation?

• A) -0.871
• B) +0.224
• C) +0.234
• D) -0.234

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Definitions:

Occurrences

Events or instances of something happening or being present.

Interval

A range of values in statistics that describes the difference between two points, often used in the classification of scales of measurement.

Random Variable

A variable whose values depend on outcomes of a random phenomenon, with each outcome associated with a different value or set of values.