Red and yellow creates orange. Yellow and blue creates green. The secondary colors can be mixed further to create additional shades. Tertiary colors are the result of a primary and secondary color mixed together. For example, orange mixed with red creates red-orange.
Outliers And Influential Points. An outlier is a data point that diverges from an overall pattern in a sample. An outlier has a large residual (the distance between the predicted value () and the observed value (y)). Outliers lower the significance of the fit of a statistical model because they do not coincide with the model's prediction.
Thus, there is a distinction between outliers and high leverage observations, and each can impact our regression analyses differently. It is also possible for an observation to be both an outlier and have high leverage. Thus, it is important to know how to detect outliers and high leverage data points. Once we've identified any outliers and/or high leverage data points, we then need to determine whether or not the points actually have an undue influence on our model. This lesson addresses all these issues using the following measures: