Question

which of these is an example of an independent variable and its effect on a dependent variable? right handed and left handed distance traveled and amount of fuel used gender and ethnicity rain clouds and clouds of fog

Explanation:

An independent variable is one that is manipulated or changed to observe its effect on a dependent variable. In the case of distance traveled and amount of fuel used, the distance traveled can be considered the independent variable as it can be changed, and it affects the amount of fuel used (the dependent variable). The other options are pairs of variables that are not in a clear independent - dependent relationship. For example, right - handed and left - handed are just two categories of a single variable (handedness), gender and ethnicity are different categorical variables, and rain clouds and clouds of fog are different types of clouds not in a cause - effect relationship.

Answer:

distance traveled and amount of fuel used