In two main situations:
1. When there are so many observations that the bars would be extremely thin, and also differences in class widths are no longer of great importance.
2. When you wish to compare two (or more) "dependent" variables, and if plotted as bars, one would hide the other.
line or bar graph
You can use a bar graph or a line graph.
you would use a line graph
You would use a broken bar graph, when grouping and gathering information. You would use straight, slanted, or vertical lines and showing points with dots. A broken bar graph is just like a line graph.
I'm in sixth grade and I use circle graphs in social studies and bar and line graphs in science
Gay
You usually want to use a bar graph. If you have a year of data you probably want to use a line graph.
a bar graph is best used for comparing amounts, a line graph best represents a steadily increasing value. For example prices of a shirt (line graph), or viscosity of liquids (bar graph).
Bar charts are good for comparing related items. Answer: for Excel it is best known as a column chart.
You would use a bar chart. A line graph is for showing stuff like temperature.
Bar graphs are used when graphing a qualitative independent variable, but a line graph is used when the independent variable is quantitative. Also when you are comparing quantity of objects(bar graph)
You could, but a line graph would probably be better.