Classify each of the following variables as numerical or categorical. Then further classify the numerical variables as continuous or discrete, and the categorical variables as ordinal or nominal. (1)...

Classify each of the following variables as numerical or categorical. Then further classify the numerical variables as continuous or discrete, and the categorical variables as ordinal or nominal.

(1) Gender

(2) Race

(3) Age (in years)

(4) Age in categories (0–20, 21–35, 36–45, 45–60, 60–85, 85+)

(5) Zipcode

(6) Toxicity (mild, moderate, life-threatening, dead)

(7) Number of hospitalizations in the past year

(8) Change in HIV-RNA

(9) Weeks on treatment

(10) Treatment (placebo versus estrogen)