Using linear regression,you compare two different methods for quantifying LDL in a serum sample.Which of the following is NOT acceptable practice when using regression lines?

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Extrapolation of points outside the standard curve is not an acceptable practice when using regression lines. This is because the regression line is only valid within the range of the data used to create it. Extrapolation, or extending the regression line beyond the range of the data, can lead to inaccurate predictions and should be avoided. The other options, calculation of the slope, identification of the y-intercept, and interpolation within the range of the data, are all acceptable practices when using linear regression.

Using Linear Regression,you Compare Two Different Methods for Quantifying LDL