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Exercise 1-12: Emergency Rooms
ve
ive
Suppose that the observational units in a study are the patients arriving at an emergency room in a given day. For each of the following, indicate whether it can legitimately be considered a variable or not. If it is a variable, classify it as categorical (and if it is binary) or quantitative. If it is not a variable, explain why not.

a. Blood type
b. Waiting time
c. Mode of arrival (ambulance, personal car, on foot, other)
d. Whether or not men have to wait longer than
women
e. Number of patients who arrive before noon
f. Whether or not the patient is insured
g. Number of stitches required
h. Whether or not stitches are required
i. Which patients require stitches
j. Number of patients who are insured
k. Assigned room number

Sagot :

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