[ing]Linear regression with one variable - cost function intuition1

 Coursera lecture summary 

Cost function intuition 1

When \theta_1 = 1θ1 = 1θ1​=1, we get a slope of 1 which goes through every single data point in our model. Conversely, when \theta_1 = 0.5θ1​=0.5, we see the vertical distance from our fit to the data points increase.