The Table Below Shows the Average Income by Age Group

question 83

Multiple Choice

The table below shows the average income by age group for the residents of one town in the year 1998. The average incomes for each age group are estimates based on a sample of size 100 from
Each group. $$\begin{array} { c c } \hline \text { Age group } & \text { Average income } \\\hline 18 - 24 & \$ 17,180 \\25 - 39 & \$ 26,661 \\40 - 54 & \$ 32,471 \\55 - 70 & \$ 25,960 \\\text { Over 70 } & \$ 18,241 \\\hline\end{array}$$ Classify the study as either descriptive or inferential.

• A)Descriptive
• B)Inferential

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Definitions:

Mental Age

A concept in developmental psychology that represents the cognitive ability of an individual in comparison to others of a certain chronological age.

Two Years

A time period equivalent to 24 months or approximately 730 days.

Intelligence Quotient

A measure of a person's cognitive abilities and potential, compared to the population, often calculated through standardized testing.

Stern Scale

A measurement or rating system used in a specific contextual framework, which requires further detail to define adequately.