A non-linear graph.
There is no specific name. It could be a non-linear graph, or a scatter graph.
nonlinear graph
nonlinear graph.
a line of best fit
False.
a line of best fit
a line of best fit
a line of best fit
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.
There are several possible answers: The line is actually meant to be a curved line and not a straight line. The relationship between the two variables is not a linear function. Discovering this can be one of the main reasons for drawing the graph. The data points are empirical measurements (from an experiment, for example) and there are errors associated with the observations. The errors may be systematic or random. You have made mistakes - either in recording the data or in plotting them.
The definition is any chart where one or more points lie off the straight line joining the other points.