The table below shows the approximate value of Canada's crude oil and natural gas exports over a 5-year period.The amounts shown are billions of dollars.
TABLE 2-7
-Refer to Table 2-7.Assume that 2009 is the base year,with an index number = 100.What is the index number for the value of crude oil exports in 2012?
A)1.72
B)30.5
C)171.8
D)30.5%
E)0.31

Question

The table below shows the approximate value of Canada's crude oil and natural gas exports over a 5-year period.The amounts shown are billions of dollars.
  TABLE 2-7
-Refer to Table 2-7.Assume that 2009 is the base year,with an index number = 100.What is the index number for the value of crude oil exports in 2012?
A)1.72 
B)30.5 
C)171.8 
D)30.5% 
E)0.31

Quizplus · Accepted Answer

To calculate the index number, we take the value for the given year divided by the value for the base year (2009) and then multiply by 100. For crude oil exports in 2012, the value is $69.1 billion. So the index number would be (69.1/40.1) x 100 = 172.3, rounded to 171.8.

The Table Below Shows the Approximate Value of Canada's Crude