On a time-series graph with a ratio scale
A) the slope of the line is negative when the level of the variable is rising.
B) the same distance along the vertical axis measures different amounts of the variable.
C) time is plotted on the vertical axis rather than the horizontal axis.
D) it is impossible to determine a trend.

Question

Quizplus · Accepted Answer

On a time-series graph with a ratio scale, the same distance along the vertical axis represents the same proportionate change rather than the same absolute change, meaning different amounts of the variable can be represented by the same vertical distance if they are in proportion. This allows for easier comparison of growth rates over time.

On a Time-Series Graph with a Ratio Scale