Question

consider the distribution of the annual rainfall in 91 cities selected randomly throughout the united states. complete parts (a) through (d) below.
a. how many peaks would you expect for the distribution?
a. there would probably be no peaks. the annual rainfall tends to form a uniform distribution.
b. there would probably be three peaks, one for the cities with little rainfall, one for the cities with average rainfall, and one for the cities with a lot of rainfall.
c. there would probably be many peaks corresponding to the different amounts of rainfall in each city.
d. there would probably be one peak because there are no obvious reasons why the values of the annual rainfall would form different groups.

Explanation:

The United States has diverse climates. There are cities with arid - like conditions (little rainfall), cities with average rainfall typical of temperate or other common climates, and cities in regions with high rainfall such as near the Gulf Coast or in some mountain - rainforest areas. So, we can expect three distinct groups leading to three peaks in the distribution of annual rainfall.

Answer:

B. There would probably be three peaks, one for the cities with little rainfall, one for the cities with average rainfall, and one for the cities with a lot of rainfall.