The file P02_19.xlsx lists annual percentage changes in the Consumer Price Index (CPI) from 1914 through 2010.
Question:
The file P02_19.xlsx lists annual percentage changes in the Consumer Price Index (CPI) from 1914 through 2010. Find and interpret the first and third quartiles and the interquartile range for these annual percentage changes. Discuss whether these are meaningful summary measures for this time series data set.
Suppose that the data set listed the actual CPI values, not percentage changes, for each year. Would the quartiles and interquartile range be meaningful in this case? Why or why not?
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Year Percent Change Percent Change 1914 10 One Variable Summary Data Set 1 1915 20 Mean 3357 1916 12...View the full answer
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5th edition
Authors: S. Christian Albright, Wayne L. Winston
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