1. A histogram is most appropriate for describing

a. the frequency distribution of discrete data

b. the frequency distribution of continuous data

c. changes of data over time

d. the median of a set of data

Which of the following is not true about an independent variable?

a. an independent variable determines a dependent variable

b. an independent variable is represented on the horizontal axis of the graph

c. one independent variable may produce more than one output

d. an independent variable's value is not arbitrarily chosen

You measure the age (years), weight (pounds), and breed of 200 dogs. How many variables were measured?

a. 1

b. 3

c. 200

d. 203

The number of cups of coffee drank in a day and the number of hours slept each night would most likely exhibit

a. a positive correlation

b. a negative correlation

c. no correlation

d. an independent trend

. When can the value of a quantitative variable be expressed as a number?

a. only if the variable is discrete

b. only if the variable is continuous

c. always

d. never