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 1.79

71. Worst Tornadoes. CNN.com reports6 that the five worst tornadoes in American history in terms of death toll are as shown in the following table. Do (a)–(d). What is the observation for the St. Louis Tornado?

Tornado name Deaths Year
Tri-State 695 1925
Natchez 317 1840
St. Louis 255 1896
Tupelo 216 1936
Gainesville 203 1936

1.2.71

(a) Elements are the tornado names: Tri-State, Natchez, St. Louis, Tupelo, Gainesville; Variables: deaths, year (b) Quantitative variables: deaths, year (c) Discrete: deaths, year (d) Deaths is ratio, year is interval (e) 255, 1896