For Exercises 65–71, do the following.

  1. List the elements and the variables.
  2. Identify the qualitative variables and the quantitative variables.
  3. For each quantitative variable, indicate whether it is discrete or continuous.
  4. For each variable, identify the level of measurement.
  5. Provide the observation for the indicated element.

Question 1.73

65. Endangered Species. Refer to the following table, which lists four of the endangered animal species in the United States, as listed by www.earthsendangered.com. Do (a)–(d) and then provide the observation for the Florida panther.

Endangered
species		 Year listed as
endangered		 Estimated
number
remaining		 Range
Pygmy rabbit 2001 20 Washington
State
Florida panther 1973 50 Florida
Red wolf 1967 200 North
Carolina
West Indian
manatee		 1967 2500 Florida

1.2.65

(a) Elements: Endangered species pygmy rabbit, Florida panther, red wolf, and West Indian manatee; Variables: year listed as endangered, estimated number remaining, and range. (b) Qualitative variables: range; Quantitative variables: year listed as endangered and estimated number remaining. (c) Year listed as endangered—discrete, estimated number remaining—discrete. (d) Year listed as endangered—interval; estimated number remaining—ratio, range—nominal. (e) 1973, 50, Florida.