The line of a graph is quite often used to indicate the average of various data points that fall both above and below the line. Very jagged lines get smoothed out, but the trend is the same.
A discrete graph.
A non-linear graph.
a straight line
1. PICTORIAL GRAPHS. These are the kind found in mathematics and physics textbooks. Their purpose is to simply and clearly illustrate a mathematical relation. No attempt is made to show data points or errors on such a graph.2. DISPLAY GRAPHS. These present the data from an experiment. They are found in laboratory reports, research journals, and sometimes in textbooks. They show the data points as well as a smooth line representing the mathematical relation.3. COMPUTATIONAL GRAPHS. These are drawn for the purpose of extracting a numerical result from the data. An example is the calculation of the slope of a straight line graph, or its intercepts.
A pie chart
line of best fit x
A graph has to be clearly labelled and drawn for clarity and to aid the correct interpretation of the data shown on the graph.
In an experiment, the observations always have some kind of random error. It could also be that the relationship between the variables is such that it can't be represented by a smooth line.If the data points do form a perfectly smooth line, you have probably 'cooked' the results, and it will be obvious that you haven't performed the experiment!
A scatter plot would be best for non-related data points. A line graph would be best for related data points.
Line graph...
A discrete graph.
linear graph
It depends on what you are trying to do.
Maths
either a scatter graph or a line graph xx :)
Any kind of properly drawn graph does. That's what graphs do.
line graph rock