The question states:
Plot the regression line from D = 40 to D = 300.
My question:
Do you extend the line beyond those 2 points (as in going towards the axis) or does the regression line just connect those 2 points like a line segment?
Thank you
When plotting a regression line, it is common practice to extend the line beyond the given data points to represent the trend or relationship between the variables being analyzed. The regression line is not limited to connecting just the two specified points. It provides a visual representation of the overall trend and can be extended to show the predicted values for the range of interest.
When plotting a regression line, it is common to extend the line beyond the given range of data points in order to determine the overall trend and estimate values outside the range. The regression line represents the best-fit line through the data points and is designed to provide an estimate of the relationship between the variables being analyzed.
Therefore, in this case, you would extend the regression line beyond the two given points of D = 40 and D = 300. By extending the regression line, you can observe its direction and determine how it might continue beyond those points. This allows for making predictions or analyzing the relationship between the variables within a larger range of values.
It's worth noting that the extension of the regression line beyond the given points is an estimation based on the data. The farther you move away from the observed data range, the less reliable the predictions or interpretations become. However, extending the line can still provide valuable insights and help identify potential trends in the data.