The Table Below Shows Hypothetical Data for Volumes of E-

Multiple Choice

The table below shows hypothetical data for volumes of e- books and hardcover books sold over a 3- year period in a particular city. $$\begin{array} { | c | c | c | } \hline & \text { E- books } & \text { Hardcover Books } \\\hline \text { Year 1 } & 23000 & 72000 \\\hline \text { Year 2 } & 52000 & 59000 \\\hline \text { Year 3 } & 106000 & 31000 \\\hline\end{array}$$ TABLE 2- 3
-When studying economic data,and when comparing the magnitude of changes in variables with different scales it is best to

A) express each variable as an index number.
B) compare the relative data on each variable.
C) compare the absolute data on each variable.
D) use only time- series data.
E) express each variable as a logarithmic number.