The Best-Fit Line

For today, we studied the best fit line. This topic does not only encompass algebra but includes a lot of statistics.  By definition, a best-fit line is a line that best fits the scattered points plotted in a graph. It is just looking the line that represents the trend of a scattered points.  In determining the best fit line, its slope must be computed first. There are several ways in determining the slope of  a best fit line. Among these are the ordinary least squares line, the ratios of medians line, the ratio of arithmetic means line, the regression-through-origin least-squares line, and the arithmetic mean of ratios. Statistically, determining the best fit lines lies heavily in determining the mean value or median value of the x and y variables.