Information for Questions 38-42: My research lab has been examining national healthcare data and we could use your help with interpreting some analyses. We're writing a paper investigating the use of nurse practitioners (and physician assistants) as a usual source of primary care. First, we're interested in understanding whether the patients who see NPs or PAs are different than those who see physicians. The dataset contains information on 112,401 patients. Here is some information on the two variables we're examining:

What type of variable is "provider"?

Group of answer choices

A. Ratio variable

B. Nominal variable

C. Ordinal variable

D. Dichotomous variable

E. Cannot tell without more information