Biology Forums - Study Force

The table below shows hypothetical data for volumes of e-books and hardcover books sold over a 3-year period in a particular city.

​	E-books	Hardcover Books
Year 1	23 000	72 000
Year 2	52 000	59 000
Year 3	106 000	31 000

TABLE 2-3

Refer to Table 2-3. Suppose we choose Year 1 as the base year and construct a series of index numbers with which to analyze the sales data. The index numbers for volumes of e-books sold (starting with Year 1) is

▸ 100; 126.1; 360.1.

▸ 23 000; 52 000; 106 000.

▸ 100; 226.1; 460.9.

▸ 1; 0.442; 0.217.

▸ 100; 44.2; 21.7.

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