SOLUTIONS
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Business Statistics,
ED
3rd edition
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Authors:
LU
Robert A. Donnelly
TI
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, CHAPTER 1
An Introduction to Business Statistics
1.1 Quantitative/Interval. The differences between average monthly temperatures are
meaningful, but there is no true zero point, i.e., absence of temperature.
1.2 Quantitative/Ratio. The differences between average monthly rainfalls are meaningful, and
there is a true zero point, because there may be a month without any rainfalls.
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1.3 Qualitative/Ordinal. You can rank education level, but the differences between different
educational levels cannot be measured.
1.4 Qualitative/Nominal. The marital status is just a label without a meaningful difference, or
ranking.
ED
1.5 Quantitative/Ratio. The differences between ages of respondents are meaningful and there
is a true zero point: an age of the respondents that equals zero represents the absence of age.
SO
1.6 Qualitative/Nominal. The genders are merely labels with no ranking or meaningful
difference.
LU
1.7 Quantitative/Interval. The differences between birth years are meaningful, but there is no true
zero point with calendar years.
TI
1.8 Qualitative/ Nominal. The political affiliations are merely labels with no ranking or
meaningful difference.
ON
1.9 Qualitative/ Nominal. The races of the respondents are merely labels with no ranking or
meaningful difference.
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1.10 Qualitative/ Ordinal. You can rank the performance rating, but the differences between
different performance ratings cannot be measured.
1.11 Qualitative/ Nominal. The uniform numbers of each member of the school’s sport team are
labels with no ranking or meaningful difference.
1.12 Qualitative/ordinal. The differences in the data values between class ranks are not
meaningful.