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.
An influential point is an outlier that greatly affects the slope of the regression line. One way to test the influence of an outlier is to compute the regression equation with and without the outlier. This type of analysis is illustrated below.
Outliers. Data points that diverge in a big way from the overall pattern are called outliers. There are four ways that a data point might be considered an outlier. 1  It could have an extreme X value compared to other data points. 2  It could have an extreme Y value compared to other data points. 3  It could have extreme X and Y values. 4  It might be distant from the rest of the data, even without extreme X or Y values.