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.
Lesson Summary. An outlier is any value that is numerically distant from most of the other data points in a set of data. Measurement error, experiment error, and chance are common sources of outliers. The easiest way to detect an outlier is by creating a graph.