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Results tagged with self-study
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user 119989
A routine exercise designed to test one's knowledge; often from a textbook, course, or test used for a class or self-study. This community's policy is to "provide helpful hints" for such questions rather than complete answers.
2
votes
1
answer
576
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McNemar test comparing two proportions in a crossover trial
In a crossover trial involving 50 patients, two dialysis treatment schedules were compared.Ten patients complained of vomiting on both schedules, 30 on neither, nine on treatment A only and one on tr …
- 107
6
votes
2
answers
4k
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Why does -2log-likelihood decrease when you add new variables?
Suppose I'm conducting a study with follow-up survey after N years. Now I want to determine potential risk factors for mortality. I use a model selection procedure and get a table in which the maximiz …
- 107
1
vote
0
answers
58
views
Is there easiest way to derive variance of continuation-ratio logit estimator?
I wanted to calculate the variance of continuation-ratio logit estimator that defined as $\hat{\theta}^+_j=\ln\frac{\pi_j}{\sum_{k=1}^{j-1}\pi_k}$, for $j=2,...,C$, where $C$ is number of categories.
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- 107