search for: calcute

Dear R forum helpers,I have following datatrans <- data.frame(currency_transacted = c("EURO", "USD", "USD", "GBP", "USD", "AUD"), position_amt = c(10000, 25000, 20000, 15000, 22000, 30000))date <- c("12/31/2010", "12/30/2010", "12/29/2010", "12/28/2010", "12/27/2010",

Dear R- User I created two random number sets using rnorm function and calcuted their respective means. However now I would like to randomly replace some values with NA. Thus create my own test data. Any help or suggestions on this ? Also wanted to confirm when multiplying two random number vectors x am y by matrix..is this how i do it. A is the matrix...

Hi list, i've got a question about the chisq.test function. in the use of the "given probabilities" method (p= ...), normally there should be typed in probabilities in the range of 0 to 1 with the absolute sum of 1.0 (r-help) But it is possible to use probabilities > than 1. or the sum <1.! without any warning message Ok, now the question, what does r calcutate in these

...ions. I suppose that the reason can be found in the value that qt(0.98, n) calculates. I compared the results of qt with the values I would expect and found out that it returns the values of the student distribution for a one-sided question (eg. qt(0.99, 10) = 2.76). Is there a way to use qt to calcute the quantiles for a two-sided problem? Or is there a different function I could use in a similar way as qt? Thanx, Antje -- Jetzt dabei sein: http://www.shortview.de/?mc=sv_ext_mf at gmx

...for the burden of disease due to air pollution from publications and tools published by the WHO. The calculations make use of published dose-response relationships for particular health end-points. This is then applied to populations with known or estimated levels of exposure and incidence rates to calcute the number of cases of each end-point attributable to each pollutant. I have functions that work on their own but when is have to use the one within the other, I don't know how to specify its arguments Here are example data and the functions: ##################################################...