It is incorrect to state that Kevin uses the weight in pounds as the independent variable and the weight in kilograms as the dependent variable because in a scatterplot, the independent variable is plotted on the x-axis, and the dependent variable is plotted on the y-axis. In this case, it is not specified which variable represents the x-axis and which variable represents the y-axis. Additionally, weight in pounds and weight in kilograms are two different measurements and cannot be used as independent and dependent variable in a scatter plot since they are not directly related.