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Statistical Data Measures

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Classify each of the following as nominal, ordinal, interval or ratio data:

a) The time required to produce each tire on an assembly line.
b) The number of quarts of milk a family drinks in a month.
c) The ranking of four machines in your plant after they have been designated as excellent, good, satisfactory, and poor.
d) The telephone area code of clients in the United States.
e) The age of each of your employees.
f) The dollar sales at the local pizza house each month.
g) An employee's ID number.
h) The response time of an emergency unit.

2. The Rathburn Manufacturing Company makes electric wiring, which it sells to contractors in the construction industry. Approximately 900 electric contractors purchase wire from Rathburn annually. Rathburn's director of marketing wants to determine electric contractors' satisfaction with Rathburn's wire. He developed a questionnaire that yields a satisfaction score between 10 and 50 for participant responses. A random sample of 35 of the 900 contractors is asked to complete a satisfaction survey. The satisfaction scores for the 35 participants are averaged to produce a mean satisfaction score.

a) What is the population for this study?
b) What is the sample for this study?
c) What is the statistic for this study?
d) What would be a parameter for this study?

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Solution Preview

1.
a) The time required to produce each tire on an assembly line.
Ratio

b) The number of quarts of milk a family drinks in a month.
Interval

c) The ranking of four machines in your plant after they have been designated as ...

Solution Summary

This solution is comprised of a detailed explanation on appropriate types of data such. Full description is given for the type of variable along with population and sample defined for the particular problem.

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