1 vote
252 views

### Goodness-of-fit tests for logistic regression [duplicate]

from my knowledge, there are two approaches to evaluating whether the model fits the data in logistic regression. First is the predictive power. Second is from using goodness-of-fit tests. My ...
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### Evaluating logistic regression and interpretation of Hosmer-Lemeshow Goodness of Fit

As we all know, there are 2 methods to evaluate the logistic regression model and they are testing very different things Predictive power: Get a statistic that measures how well you can predict the ...
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### What follows if we fail to reject the null hypothesis? [duplicate]

What conclusions can we draw if $p>\alpha$? Does not rejecting the $H_0$ mean anything?
3k views

### Area Under Curve ROC penalizes somehow models with too many explanatory variables?

I'm using Area Under Curve ROC as a performance measure of my classification algorithms (logistic regressions). Since I'm going to choose the model that maximize the Area Under Curve ROC, I would like ...
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5k views

• 601
805 views

### How to know if a statistic prediction is right?

The weather forecast predict the probability of rain or not for some day. If I could repeat the same day many times I could count how many times does it rain or not, so I could compare with the ...
• 73
10k views

### how to calculate R-squared in glm?

I came up with below for my glm analysis but I need to calculate R-squared to cite in the paper? anyone can help me with this please? summary(lrfit) Call: ...
2k views

### How to validate and compare models predicting a binary variable?

I have a question about determining which models are "better" and how to assess that info. Let's say I have three models, each which predicts our bid on won ping. Our bid is a continuous variable and ...
• 2,635
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### Interpretation of Hosmer Lemeshow (goodness-of-fit) Test from rms package

I applied a Hosmer-Lemeshow-Test (now named only goodness-of-fit?) provided by the RMS Package by Prof. Harrel. The p-values for my model were not significant, therefor applying the following link: ...
• 87
1 vote
1k views

### Improve the goodness-of-fit of a logistical regression

I've been working on a data set with binary outcome. Logistic regression was used to fit the outcome with several covariates, all of which are categorical variables. I tried to assess the goodness-...
• 647
1 vote