Certified Travel Counselor (CTC) Practice Exam 2025 - Free CTC Practice Questions and Study Guide

Demographic variables are statistical characteristics of a population that help to categorize individuals within that population. Age is a prime example of a demographic variable because it is easily quantifiable and can provide insights into the preferences, behaviors, and purchasing power of different groups. For instance, marketing strategies may differ significantly when targeting a younger demographic compared to an older one, as their needs and interests often vary widely.

In contrast, the other options—depression, attitude, and illness—are not demographic variables. They are more aligned with psychological or health-related attributes, which may describe the conditions or states of individuals but do not classify individuals as a whole within a population. Understanding demographic variables like age can greatly enhance targeted marketing and service provision in various fields, including travel.