Question

in science, graphs are often used to display data collected from an experiment. which of the following is true regarding a graph?

independent variables may include age or time.

the dependent variable is plotted on the x - axis.

graphs always involve plots of individual data points.

most graphs are plotted on three axes.

Explanation:

• Independent variables are factors controlled/measured without relying on other variables; age and time fit this, as they are often used as independent variables in experiments.
• Dependent variables are plotted on the y-axis, not the x-axis (x-axis is for independent variables).
• Not all graphs use individual data points (e.g., bar graphs or line graphs with aggregated data do not rely on plotting every single individual point).
• Most scientific graphs use two axes (x and y), not three; 3-axis graphs are specialized and not standard.

Answer:

A. Independent variables may include age or time.