Answer for Logistic Regression on purchase incidence vs average candy price

https://365datascience.com/dwqa-answer/answer-for-logistic-regression-on-purchase-incidence-vs-average-candy-price/ -

 

 

Hi MinliYu, 

thanks for reaching out!

When you create a scatter plot on X and Y, you’re creating a scatter plot on those two variables X and Y. In our case:

Y is the incidence column which is binary(contains 0s and 1s)

X is the average price.

A scatter plot shows each point with coordinates X and Y on a 2D plane.So, the pair of parallel lines you’re seeing are for the 0s and 1s from the X variable. And a scatter plot of X and Y should look exactly like that. 

A sigmoid function, on the other hand, is something different. The sigmoid function is the logistic function used by the Logistic Regression to estimate the class probabilities. 

 

Best, 

Eli

 

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