Determine High Leverage Observations
This example shows how to compute Leverage values and assess high leverage observations. Load the sample data and define the response and independent variables.
load hospital y = hospital.BloodPressure(:,1); X = double(hospital(:,2:5));
Fit a linear regression model.
mdl = fitlm(X,y);
Plot the leverage values.
For this example, the recommended threshold value is 2*5/100 = 0.1. There is no indication of high leverage observations.