when should a bar graph be used independent variable
Your basic choices are bar graph, line graph, pie chart, or scatter plot. BAR GRAPH â This is the most common type for science fair projects. You may select a bar graph when your independent variable is qualitative (categories) or quantitative (numbers). LINE GRAPH â This is the second most common, but frequently used incorrectly, so be careful here. You should only select a line graph if your independent variable is quantitative (numbers) and you hypothesized that the changes in the independent variable would result in changes in the dependent one.