In a simple two-variable graph, which axis is typically used for the variable that is varied and observed as the outcome?

In a simple two-variable graph, which axis is typically used for the variable that is varied and observed as the outcome?

• A. X-axis
• B. Y-axis
• C. Z-axis
• D. Time axis

Answer: (A)

In a simple two-variable graph, the variable you deliberately vary is placed on the X-axis. This arrangement lets you control the input and observe how the outcome on the Y-axis responds as you move left to right. In other words, the X-axis holds the independent variable, the thing you change, while the Y-axis holds the dependent variable, the observed result. The Z-axis is only used for three-dimensional plots, and a time axis isn’t the default in a basic two-variable relationship unless you’re specifically plotting change over time. So, the axis for the varied variable is the X-axis.

In a simple two-variable graph, the variable you deliberately vary is placed on the X-axis. This arrangement lets you control the input and observe how the outcome on the Y-axis responds as you move left to right. In other words, the X-axis holds the independent variable, the thing you change, while the Y-axis holds the dependent variable, the observed result. The Z-axis is only used for three-dimensional plots, and a time axis isn’t the default in a basic two-variable relationship unless you’re specifically plotting change over time. So, the axis for the varied variable is the X-axis.