1.4 Discrete or Continuous? Identify each quanti- tative variable as discrete or continuous.

a. Number of boating accidents along a 50-kilometre stretch of the St. Lawrence River

b. Time required to complete a questionnaire

c. Choice of colour for a new refrigerator

d. Number of brothers and sisters you have

e. Yield in kilograms of wheat from a 10,000-square-metre plot in a wheat field