Below we list several variables. Which of these variables are quantitative and which are qualitative?
Explain.
a. The dollar amount on an accounts receivable invoice.
b. The net profit for a company in 2009.
c .The stock exchange on which a company's stock is traded.
d. The national debt of the United States in 2009.
e. The advertising medium (radio, television, or print) used to promote a product.