The U.S. Department of Agriculture (USDA) Center for Nutrition Policy and Promotion (CNPP) developed and administered the Healthy Eating Index-2005 to measure how well the population follows the recommendations of the 2005 Dietary Guidelines for Americans. The data are contained in the data file HEI Cost Data Variable Subset.
a. Give an example of a categorical variable with ordinal responses.
b. Give an example of a categorical variable with nominal responses.
c. Give an example of a numerical variable with continuous responses.
d. Give an example of a numerical variable with discrete responses.