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2. Ten vehicles were selected at random from a partial listing of all the vehicl

ID: 3299853 • Letter: 2

Question

2. Ten vehicles were selected at random from a partial listing of all the vehicles that have
been issued campus parking permits, and the data tabulated below were recorded. Note:
The list that the sample was selected from was created a few weeks before the semester
began and does not include all vehicles with campus parking permits.

a) What is a unit in this example?
b) Classify each of the 5 variables (excluding vehicle number) in the table as qualitative,
quantitative discrete, or quantitative continuous?
c) What is the population we have information about? (i.e., What is the sampled popu-
lation?)

Veichle Type Make Color Age of veichle in years Commute distance in miles 1 car Honda blue 8 12.4 2 car Ford white 7 30.1 3 truck Chevy brown 2 18.0 4 car Toyota white 3 6.2 5 truck Toyota black 9 4.6 6 motorcycle Harley black 3 28.5 7 car Honda green 6 45.0 8 truck Ford silver 10 10.7 9 motorcycle Honda red 1 4.5 10 car Nissan white 3 18.3

Explanation / Answer

Question a)

Here the unit is vehicle.

Question b)

Type = Quality

Make = Quality

Colour = Quality

Age of vehicle in years = quantitative continuous

Commute distance in miles = quantitative continuous

Question c)

Here the population we have information about is the partial listing of all vehicles.

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