The conversation between human and AI assistant.
[|Human|] In 50 words or less, explain why the following model is useful.
[|AI|] Simplified Linear Regression is useful because it enables us to identify and quantify the relationship between two numerical variables: the predictor variable and the response variable. This model allows us to make predictions about future observations and is widely used in data analysis and forecasting.
[|Human|] 
In 50 words or less, explain why the following model is useful.