https://www.youtube.com/watch?v=Cut3ZEyjBOQ&list=PLEUKy_nwlzwFbxj6ilK2XXHJqBXMcTOOc&index=3
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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
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How 1.5 error inverval was created?
Use "Confidence interval"
To create "Confidence interval", use std
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Regression
4 factors affect satisfaction
Social quality has largest effect to satisfaction