Final answer:
Age is a possible factor for a one-way ANOVA analysis.
Step-by-step explanation:
One possible factor for a one-way ANOVA analysis is age. Age can be a categorical variable that can be used to determine if there are differences in a numerical variable, such as income or test scores, across different age groups. For example, if we want to understand if there are differences in income levels among different age groups, we can conduct a one-way ANOVA analysis using age as the factor and income as the dependent variable.