1.31 Identify each of the following as an example of (1) attribute (qualitative) or (2) numerical

(quantitative) variables:

a. the breaking strength of a given type of string

b. the hair color of children auditioning for the musical Annie

c. the number of stop signs in towns of less than 500 people

d. whether or not a faucet is defective

e. the number of questions answered correctly on a standardized test

f. the length of time required to answer a telephone call at a certain real estate office