Question

the graph to the right shows the average annual income, in thousands, for certain years. identify the level of measurement of the data listed on the horizontal and vertical axes in the figure. identify the level of measurement of the data listed on the horizontal axis in the figure. choose the correct answer below. interval ordinal nominal ratio identify the level of measurement of the data listed on the vertical axis in the figure. choose the correct answer below. nominal interval ordinal ratio

Explanation:

• For the horizontal axis (years), there is no true zero point (year 0 is arbitrary in the context of calendar - based years), and differences between years are meaningful. So it is an interval level of measurement.
• For the vertical axis (average annual income in thousands), there is a true zero (zero income means no money earned), and ratios are meaningful (e.g., an income of 40,000 is twice an income of 20,000). So it is a ratio level of measurement.

Answer:

For the horizontal axis: A. Interval
For the vertical axis: D. Ratio