Mathematics for IGCSE & O level - Statistical Diagrams (Section 1 - No. 40)
What is the purpose of a line of best fit in a scatter diagram?
To display frequency data
To show the mean value of a variable.
To estimate a value when only one pair of values is known.
To highlight the outlier data points.
Explanation
The primary use of a line of best fit is to estimate a value based on known data when only one of the data points is known.
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