A Random Sample of Patients Who Attended a Clinic Was

question 29

Multiple Choice

A random sample of patients who attended a clinic was selected. The age of the patient (years) and the number of days since the last visit were collected and are displayed in the figure below. The least-squares regression line for predicting number of days since the last visit from the age of the patient is y = 600.081 - 8.694x. The slope of this line tells us the

• A) correlation between age of patient and days since last visit.
• B) change in days since last visit for each year older a patient is, on average.
• C) change in the age of the patient for each extra day since the last visit.
• D) average days since last visit for all of the patients.

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Definitions:

Internal Rate of Return

The internal rate of return (IRR) is the discount rate that makes the net present value (NPV) of all cash flows from a particular project equal to zero, used to evaluate the profitability of potential investments.

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