Ch 1: LC 3

A survey asks people to identify their age, annual income, and marital status (single, married, divorced, etc.). For each of these three variables, identify the scale of measurement that probably is used and identify whether the variable is continuous or discrete.

Age and annual income are measured on ratio scales and are both continuous variables. Marital status is measured on a nominal scale and is a discrete variable.

The teacher in a communications class asks students to identify their favorite reality television show. The different television shows make up a _______ scale of measurement.

Nominal

a) When measuring height to the nearest inch, what are the real limits for a score of 68 inches? b) When measuring height to the nearest half inch, what are the real limits for a score of 68 inches?

a.67.5 and 68.5 b.67.75 and 68.25

A researcher studies the factors that determine the number of children that couples decide to have. The variable, number of children, is a ________ (discrete/continuous) variable.

discrete

An English professor uses letter grades (A, B, C, D, and F) to evaluate a set of student essays. What kind of scale is being used to measure the quality of the essays?

ordinal