Elementary Statistics
12th Edition
ISBN: 9780321836960
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 5, Problem 1CRE
Please be aware that some of the following problems may require knowledge of concepts presented in previous chapters.
1. Weekly Instruction Time The Organization for Economic Cooperation and Development provided the following
- a. Find the mean.
- b. Find the
median . - c. Find the
range . - d. Find the standard deviation.
- e. Find the variance.
- f. Use the range rule of thumb to identity the range of usual values.
- g. Based on the result from part (f), are any of the times unusual? Why or why not?
- h. Whir U the level of measurement of the data: nominal, ordinal, interval, or ratio?
- i. Are the data discrete or continuum?
- j. There ii something fundamentally wrong with using the given times to find statistics such as the mean. What is wrong?
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Chapter 5 Solutions
Elementary Statistics
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