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 Starbucks analyst drawing a line of best fit on a scatter graph of store footfall versus daily revenue could use it to predict revenue for a new site based on expected customer numbers.
Exam Focus
When drawing a line of best fit by eye, ensure roughly equal numbers of points above and below the line — a common error examiners penalise.
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