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When is it impossible to draw a line of best fit?
if you only have one point
Is it ALWAYS possible to draw a line or curve of best fit in a scatter plot?
yes
What is a best fit line on a graph?
When points are marked on a graph, a line is often drawn across the dots plotted. A line of best fit is a straight line that goes through as many of such points as possible.
Why is it preferable to draw a line of best fit rather than to connect the dots?
show a trend
How do you make a best fit line graph?
You want to draw a line through your plotted points and try to get equal amounts on either side.
Does the trend line always pass through every point on a scatter plot?
No. When you draw a best line of fit on the scattered plot, the line would not be straight.
When should I draw a smooth curve a best fit line or only join the plots (I am especially thinking about Biology for that last one)?
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.
Is the best fit line the same as the line of best fit?
Yes but phrased differently
What is a line of best fit on a line graph?
The line that minimized the sum of the squares of the diffences of each point from the line is the line of best fit.
What is a line that is not a line but is almost a line?
A line of best-fit.
Why does best fit line does not touch all data points?
Because the "best fit" line is usually required to be a straight line, but the data points are not all on one straight line. (If they were, then the best-fit line would be a real no-brainer.)
Are the points connected in a scatter plot?
No, you draw a general line through the middle of the points.(A line of fit)
