There can be a few reasons. One reason is that the line is wrong, either it has been placed wrong or it is the wrong type of line (linear when it should be exponential) there may even be no line to fit the pattern. Another reason is that simply the real world data points don't fit a correlation exactly, this is why the line is referred to as a "line of best fit" it is the best representation from the data points. One last reason is that the data is wrong either by a plotting error or some other error in the data collection.
A discrete graph.
A non-linear graph.
a straight line
instantaneus
A pie chart
A scatter plot would be best for non-related data points. A line graph would be best for related data points.
To get data from a graph efficiently, you can use the gridlines and labels on the axes to determine the values of the data points. You can also use a ruler or a straight edge to help you accurately read the data points from the graph.
A discrete graph.
Line graph...
linear graph
Maths
It depends on what you are trying to do.
either a scatter graph or a line graph xx :)
A line graph is used to display data over time with points connected by lines. This type of graph highlights trends and patterns in the data.
A Linear graph
line graph rock
line graph