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A simple method involves cutting a rubber band. Then the rubber band straight line is stretched over the scatter diagram and moved about until you feel that 50 % of your data is on one side of the temporary line and the other 50 % is on the other side of the line.
Often the data is grouped such that a lot of points fall on the imaginary line of the rubber band and only a few oddballs are positioned well away from the line.
We think of this method as the " Best Fit " method, using your judgment to decide the best fitting trend line.
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What is the name of graphs?
line graph scatter graph
When looking for a mathematical relationship between two variables use?
line graph or a scatter plot.
How do you make a graph on graph paper?
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.
Which type of line represents a trend in the data on a graph?
trend line
What graph shows a trend over time?
A line graph shows a trend over time.
