Figure A.12 shows a dotplot of the arsenic concentrations in Table A.11. (a) Which measures of center

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Figure A.12 shows a dotplot of the arsenic concentrations in Table A.11.


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(a) Which measures of center and spread are most appropriate for this distribution: the mean and standard deviation or the five number summary? Explain.


(b) Is it appropriate to use the 95% rule about having 95% of the data within two standard deviations for this distribution? Why or why not?

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Statistics Unlocking The Power Of Data

ISBN: 9781119682219

3rd Edition

Authors: Robin H Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F Lock, Dennis F Lock

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