https://www.youtube.com/watch?v=Cut3ZEyjBOQ&list=PLEUKy_nwlzwFbxj6ilK2XXHJqBXMcTOOc&index=3 ================================================================================ Predictions Actual value But until you have result from total inspection, you can't know it 42.5 --- 46.5 Prediction will be located in above interval ================================================================================ How 1.5 error inverval was created? Use "Confidence interval" To create "Confidence interval", use std ================================================================================ Regression 4 factors affect satisfaction Social quality has largest effect to satisfaction