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Lines of Best Fit

This topic covers the concept of finding lines of best-fit from a given set of values, including some word problems.

Topic: Finding Lines of Best-Fit

  • When data show a correlation, we can estimate and draw a line of best fit that approximates a trend for a set of data and use it to make predictions

  • Calculate the mean of the x-coordinates and that of the y-coordinates (xm, ym)

  • Draw the line through (xm, ym) that appears to best fit the data

  • Estimate the coordinates of another point of the line to calculate the slope

  • Find the equation of the line by substituting the values of ‘m’, ‘x’, and ‘y’ in point-slope form of an equation
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