Logistic regression: 'Estimates plots'

naren17

Hello,

I used JASP for logistic regression using the Titanic dataset. The dependent variable was 'survived'. The independent variables were 'age' and 'PClass'.

I reviewed the 'Estimates plots' and trying to understand it. In the estimate plot below the p(survival=1) is around 0.75. Does this mean that for the given same age, a passenger in first class has 75% probability of surviving and 25% probability of drowning?

Thank you!

Dmartin427

Yes, you're interpreting it correctly!

In the estimate plot, the y-axis shows the predicted probability of survival (P(Survived = 1)) for each passenger class (PClass). So, a passenger in 1st class has about a 0.75 (75%) chance of surviving, which means there's a 25% chance of not surviving, assuming all other predictors in the model are controlled for.

The error bars indicate the uncertainty (confidence interval) around those probabilities, but your interpretation of the 75% survival rate as a 25% chance of death for first class is indeed correct.