yes
scatter plot
First make a table of values, then draw axes and label them appropriately Then plot points carefully, and join with a curve or line (the particular way of drawing the line depends on the type of graph: scientific, scatter or mathematical.) Scientific graphs have values resulting from experiments. You draw a curve that follows the general trend of the points. (And passes within experimental error of the points) Scatter graphs are plotted with a straight line of best fit. Mathematical graphs should be joined with curves that pass exactly through the points.
You always use some model (i.e. function) to fit experimental curve. If you do not know the kind of curve (linear, parabola, Gauss, etc.) you can try to fit with different functions and then compare the residual sum of squares and coefficient of determination of those fit functions. I use MagicPlot for curve fitting, you can try to find something in MagicPlot on-line help.
Line of best fit
It is the line of best fit.
The line of best fit is simply the line that shows the general direction of the graph. The trick is to make the line go through as many points on the graph as possible. Some scatter plots have no line of best fit.
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You should use a curve if the scatter plot shows a clear curving shape. Otherwise draw a straight line. But a line of best fit should never zigzag from point to point.
The best curve for me might not be the best curve for you. It's about personal preference.
scatter plot and line graph
beckham, best curve
No. When you draw a best line of fit on the scattered plot, the line would not be straight.
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the line of best fit if you have any more math questions conmtact me at jibleesmaster@yahoo.com
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scatter plot
It can showwhether or not there is any relationship between two variables,the nature of the relationship - linear, quadratic, inverse, power etc,precision of relationship: the spread or scatter around the curve of best fit,whether the scatter is constant or changes (heteroscedasticity),presence of outliers,clustering (eg heights v/s weight of adults may show one cluster of points for men and another for women. If so, gender is another relevant variable).