# Search results

1. ### Estimating weights in a game of chance.

Can you provide some example data? I think it would easier to help and think about what is going on if we can see what you're seeing.
2. ### Starting Values for a non-linear regression

Can you provide more info on what you're doing? If F(t) is what it normally stands for then it can't be greater than 1.
3. ### SPSS INDEPENDENT T TEST PROBLEM

Is one of your groups empty
4. ### Assumptions multiple regression violated

That's not quite right. What you did would test the marginal distribution of the dependent variable to see if a poisson distribution doesn't make sense. What the poisson regression does is a conditional poisson distribution - so we wouldn't necessarily expect that the marginal distribution...
5. ### Comparing pooled variances?

I don't think I understand - wouldn't multiplying by the reciprocal of the mean also impact the variances? Why not just subtract the mean instead of multiplying by the reciprocal if you wanted to eliminate the mean but preserve the variances?
6. ### R package development

The package doesn't need to be in working order to be on github. But once it's up it will be easier for anybody to help you out. Have you read https://cran.r-project.org/doc/manuals/r-release/R-exts.html It's a dry read but it's the definitive documentation for writing R packages.
7. ### Thought experiment (standardized binary variable)

True. But if it helps conceptually you can just think of the original binary variable as a continuous variable (forget that it only takes two values - they're both numbers right?) Now in terms of applying the interpretation it probably makes more sense to think in terms of going from the 0...
8. ### R package development

Do you have your code on github?
9. ### Thought experiment (standardized binary variable)

The same way you would interpret any continuous variable that has been standardized.
10. ### Converting p-values to z-scores - Stouffer-Method for Metaanalysis (two-tailed regressions)

Do you only have the coefficients and pvalues or do the have the standard errors for the coefficients as well
11. ### who can proof this question

Hi! We are glad that you posted here! This looks like a homework question though. Our homework help policy can be found here. We mainly just want to see what you have tried so far and that you have put some effort into the problem. I would also suggest checking out this thread for some...
12. ### A quesion about Percentile

If you want more details on how the values in the tables were calculated the WHO does a good job detailing everything: http://www.who.int/childgrowth/standards/Technical_report.pdf?ua=1
13. ### Shapiro-Wilk Normality Test

Since Karabiner hasn't explicitly said it - if you're doing regression we don't require any of the input data to be normally distributed. It is the error term which we put the normal distribution assumption on. So if you want to test for normality then it makes the most sense to test the...

t-test
15. ### Random Sample Generation w/out Knowing P

I think it might clear some things up if you describe the actual situation you're dealing with instead of generalizing it to some hypothetical playing card situation.
16. ### Permutation test with skewed data

She was specifying values to create sample data. The actual model did the parameter estimation.
17. ### Fixed effects linear constraint

Is that the only restriction? Or do you also require the coefficients to be positive?
18. ### Regression with error in the dependent var.

It does partially depend on what your actual goal is. What do you want to do? Make inferences or make predictions?
19. ### A good reminder

For those of us with kids...
20. ### Help me solve this question please

Ok I solved it. But before we talk about the solution... Hi! :welcome: We are glad that you posted here! This looks like a homework question though. Our homework help policy can be found here. We mainly just want to see what you have tried so far and that you have put some effort into the...