Propagation of error problem

Dear Colleagues, I have an equation Y^2 = (2D)X, where 2D is a constant and both Y and X are experimentally-measured parameters. I have both experimental values of X (values known precisely; std. deviation = 0) and of Y (for which I have std. deviations y for each Y-value). To obtain

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(Probably Simple) Chi-Square Intuition Question

I'm looking at forced-reponse answers to a question where there a several possible choices. I'm trying to test the significance of the difference between the proportion choosing answer A and the proportion choosing answer B. I've got the fairly-simple formula for a chi-square-distributed test

Re: Likelihood ratios and non-nested models

Thanks Rich, can you suggest a book where I can read about the basis underlying the LR test? The books that I have just tell me where and how to use it, without giving a sufficient theoretic description of why. Cheers, Brian Rich Ulrich [EMAIL PROTECTED] wrote in message news:[EMAIL

Re: modes of convergence

In article [EMAIL PROTECTED], Thomas Souers [EMAIL PROTECTED] wrote: Hi, I am having some difficulties with the interpretation of particular modes of convergence. I was wondering if someone could clarify what convergence in distribution and in probability really mean in English (if this is

Re: Likelihood ratios and non-nested models

doesn't the Hosmer and Lemeshow book on logistic regression give some good background on the test? At 08:07 AM 1/21/2002 -0800, Brian Leung wrote: Thanks Rich, can you suggest a book where I can read about the basis underlying the LR test? The books that I have just tell me where and how to

how to adjust for variables

also if you ajdust by using residuals, do you still have to factor in KCal in your final regression equation? it would seem to me that you should if you have other variables that might be confounded by KCal, but otherwise you wouldn't.

how to adjust for variables

Pretend you want to see how fat relates to cancer risk fat Kcalcancer 1 2 100 2 4 120 3 6 130 4 8 140 5 10 150 6 12 160 7 14 170 8 16 180 9 18 190 10 20 200 You have to

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Re: 95% CI for a sum

Scheltema, Karen wrote: I have 2 independent samples and the standard errors and n's associated with each of them. If a and b are constants, what is the formula for the 95% confidence interval for (a(Xbar1)+b(xbar2))? Are the sample sizes big enough that you'd be prepared to use the CLT?

RE: Faults and Errors in EXCEL

-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Humberto Barreto Sent: Monday, January 21, 2002 6:29 AM To: David Heiser; [EMAIL PROTECTED] Subject: Re: Faults and Errors in EXCEL At 05:41 PM 1/20/02 -0800, David Heiser wrote: These are my questions: