Line of Best Fit
A straight line drawn on a scatter graph that best represents the trend of the data, minimising the overall distance bet...
Real World
A coffee shop chain plotting footfall against revenue on a scatter graph draws a line of best fit to predict how much revenue a new location with estimated footfall of 500/day might generate.
Exam Focus
When drawing a line of best fit, ensure roughly equal data points either side; never force it through the origin unless justified.
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