Hello
A residual<span> is the difference between the observed y-value (from </span>scatter plot<span>) and the predicted y-value (from regression </span>equation<span> line). It is the vertical distance from the actual </span>plotted<span> point to the point on the regression line.
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Have a nice day kid!
The IQR or interquartile range is the difference between Q1 and Q3, also know as the upper and lower quartiles.
