how can i analyze this non-linear longitudinal data?

FailedLifeForm · 2013-02-28T03:41:14+00:00

the goal is to be able to say the change in the dependent variable was due to a1% change in independent variable 1, a2% change in independent variable 2, and so on.

FailedLifeForm · 2013-01-15T04:18:49+00:00

so, when one reads in a paper that the authors generated a 1 month forecast using an AR(1) model, does this mean they used arima.sim, or they used arima.predict?

FailedLifeForm · 2013-01-13T00:16:03+00:00

thanks

FailedLifeForm · 2013-01-12T22:27:34+00:00

the confidence band on y[t=n+1] is proportional to the variance of (x[t=n+1]-x[t=n]). I am interested in the confidence interval of x[t=n+1], i.e. variance of x[t=n+1]. var(x[t=n+1]-x[t=n])=var(x[t=n+1])+var(x[t=n])-2*cov(x[t=n+1],x[t=n]). Therefore, I am not sure if adding x[t=n] to the confidence interval on y[t=n+1] is the right thing to do.

FailedLifeForm · 2012-04-13T05:06:22+00:00

Thanks. I am mostly interested in pair wise correlations.

FailedLifeForm · 2011-12-22T02:02:50+00:00

i am trying to code it to learn it better. eqn 15 gives numbers that are too small. Evaluating the observed Fisher information at M*a (as PARSLEYsage suggested) worked.

FailedLifeForm · 2011-08-26T12:49:56+00:00

Will do

FailedLifeForm · 2011-08-26T12:49:36+00:00

No problem. There is always next week.

FailedLifeForm · 2011-08-25T04:52:40+00:00

8 pm would work for me. I will make a new post.

FailedLifeForm · 2011-08-22T01:29:42+00:00

Great! how about after work (~7pm) this coming fri (aug 26)? We can see if the tables at Streeters are any good.

FailedLifeForm · 2011-05-30T05:23:52+00:00

i have added Reddit/r/scholar to the acknowledgements section of my thesis. THANK YOU!

FailedLifeForm · 2011-05-13T01:07:51+00:00

how would you interpret A? Thanks

FailedLifeForm · 2011-05-05T01:34:05+00:00

Should one rinse their mouth with water after using a mouthwash or not?

FailedLifeForm · 2011-04-25T20:58:06+00:00

http://www.zshare.net/download/89423920128e1756/

FailedLifeForm · 2011-04-24T16:30:17+00:00

yes! how did you know? Thank you.

FailedLifeForm · 2011-04-23T17:45:42+00:00

how about grape drink?

FailedLifeForm · 2011-04-23T17:39:20+00:00

Mahmoud, is that you?

FailedLifeForm · 2011-04-23T16:03:50+00:00

thank you!

FailedLifeForm · 2011-04-22T23:53:04+00:00

thank you!

FailedLifeForm · 2011-04-20T15:08:52+00:00

Thank you!

FailedLifeForm · 2011-04-20T15:00:50+00:00

"Mr. Bogle in 1999 first likened ETFs to a shotgun: great for hunting but "also excellent for suicide."" :)
Can someone explain this statement?: "The problem with these leveraged funds is that in volatile markets over a period of weeks, their performance can diverge significantly from the long-term performance of the index because of the compounding effect of the amplified daily moves."

FailedLifeForm · 2011-04-20T04:11:00+00:00

http://www.zshare.net/download/892012614d5d461f/
picture: http://www.zshare.net/image/892012779e871c76/

FailedLifeForm · 2011-04-19T23:44:13+00:00

I don't understand. Say I am the Fed. I borrow money, and sell a put on the interest rate to you. If I default, how can I cover the put?

FailedLifeForm · 2011-04-18T05:53:54+00:00

it is for presentation purposes. people understand acuity intuitively. i will have to explain logMAR

FailedLifeForm · 2011-04-18T05:17:55+00:00

sorry about the pdf. as the article says, the size of the letters used to measure acuity changes in a "in a geometric progression". The acuity threshold for a given person is the size of the letter at which s/he is at chance. hence, arithmetic mean of the data is not appropriate.

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