Concept explainers
Train Tickets The table for part (a) shows distances between selected cities and the cost of a business class train ticket for travel between these cities.
a. Calculate the
b. The table for part (b) shows the same information, except that the distance was converted to kilometers by multiplying the number of miles by 1.609. What happens to the correlation when the numbers are multiplied by a constant?
c. Suppose a surcharge is added to every train ticket to fund track maintenance. A fee of
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