Suppose that the cost of a statistics text was $60 in 1985 and is $90 in 2010. What is the 'Statistics Text Index' number, rounded to the nearest tenth, for the 2010 edition with the 1985 price as the reference value?
A) 150
B) 66.7
C) 100.0
D) 50

Question

Quizplus · Accepted Answer

The Statistics Text Index number is calculated as (New Price / Old Price) * 100. In this case, the new price is $90 and the old price is $60, so the index number is (90 / 60) * 100 = 150.

Suppose That the Cost of a Statistics Text Was $60