Question

In the December 2016 report, the U.S Census Bureau listed the levels of educational attainment for Americans over 65. They classified each response as no high school diploma, high school graduate, some college, 2-year degree, 4-year degree, Master’s, or PhD. This variable is an example of ____________ data that is further described as _________

Question 19 options:

A)	Categorical, Nominal

B)	Categorical, Ordinal

C)	Numeric, Interval

D)	Numeric, Ratio

E)	Categorical, Interval

Suppose we want to study Iraq and Afghanistan veterans who already have been diagnosed with Posttraumatic Stress Disorder (PTSD) and the occurrence of heart disease. What type of study should we conduct?

Question 20 options:

A)	Controlled experiment

B)	Observational study

C)	Double-blind randomized controlled experiment

D)	All of the answers are correct

E)	None of the answers are correct

Answer 1

Question 19 answer is B since what we are taking in is a qualification level not any measurement or value. Thus it is a categorical variable. Then next concern is that the levels of education have a inherent sense of hierarchy. So there's some order in this levels. So it's ordinal.

Question 20 answer is B - observational study.

Heart disease is a destructive event, that is not to be performed even in a controlled environment. We wish to observe the association between PTSD and heart disease, which is strictly observational.