The annual revenues (in billions of dollars) of eBay are described by the bar graph in Fig.
Question:
a. Explain why the bar graph is misleading.
b. Construct a time-series plot of the data. Explain why this graph is not misleading.
c. If someone does not look carefully, which graph makes it seem like the annual revenue is increasing by greater and greater amounts, the bar graph or the time-series plot? Explain.
d. Estimate the revenue in 2013.
e. Estimate how much the annual revenue increased from 2003 to 2013. If it increased by the same amount from 2013 to 2023, what would the annual revenue be in 2023? Do you have much faith that this prediction will turn out to be true? Explain.
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