Diagnostic measures (such as residuals or some summary statistics calculated from residuals) are used to evaluate some aspect of quality of model fit to data.
Questions tagged [diagnostic]
401 questions
3
votes
0 answers
How to interpret diagnostic plots for GEV distribution
I produced the following Diagnostic plots, from the following R Code:
library(evir)
library(ismev)
data(nidd.annual)
nidd.annual
nidd.annualgevfit=gev.fit(nidd.annual)
gev.diag(nidd.annualgevfit)
And am wondering how I am interpret these and…
Ollie
- 31
3
votes
2 answers
How to compare the positive predictive value and negative predictive value of two diagnostic tests?
Im a surgeon who's trying to compare two diagnostic tests that are used to diagnose appendicitis. Two diagnostic tests were applied on 150 patients and the results were compared to a gold standard. I understand that the sensitivities and…
user48540
- 31
1
vote
0 answers
Biostatistics Advice: Comparing diagnostic / prognostic utility of 2 tests
I am a medical doctor not a statistician with some experience using STATA and SPSS.
I am currently analysing a dataset looking at the prognostic value of two diagnostic tests at predicting clinical outcomes.
The outcome is: Death
Diagnostic Test: …
user237031
- 11
- 1