search for: debbie0621

Displaying 7 results from an estimated 7 matches for "debbie0621".

2009 May 12
2
Kumaraswamy distribution
Dear R users, Does anyone know how to write function for Kumaraswamy distribution in R? Since I cannot write dkumar, pkumar, etc. in R. Please help. Thanks a lot, Debbie _________________________________________________________________ [[elided Hotmail spam]] [[alternative HTML version deleted]]
2009 May 18
3
(no subject)
Dear R users, Based on a set of binomial sample data, how would you utilize the "nlm" function in R to estimate the true proportion of the population? Thanks. Debbie _________________________________________________________________ [[elided Hotmail spam]] [[alternative HTML version deleted]]
2009 May 13
11
Simulation
Dear R users, Can anyone please tell me how to generate a large number of samples in R, given certain distribution and size. For example, if I want to generate 1000 samples of size n=100, with a N(0,1) distribution, how should I proceed? (Since I dont want to do "rnorm(100,0,1)" in R for 1000 times) Thanks for help Debbie
2009 May 13
2
(no subject)
Dear R users, Does anyone know how to graph the function below? sqrt(2)Γ(n/2)/[sqrt(n − 1)Γ((n − 1)/2] Please help. Debbie _________________________________________________________________ Want to stay on top of your life online? Find out how with Windows Live! http://windowslive.ninemsn.com.au/ [[alternative HTML version deleted]]
2009 May 16
1
(no subject)
Dear R users, Does anyone know how to write a function involving derivative? i.e. I want to implementing Newton's method in R, so my function is something like x<- x-y/y' I am not sure how to write y' in my function. Can anyone help? In addition, if I want to implementing newton's method several times, what code should I use? Currently, I use the following code.
2009 May 13
2
Problems with randomly generating samples
Dear R users, Can anyone please tell me how to generate a large number of samples in R, given certain distribution and size. For example, if I want to generate 1000 samples of size n=100, with a N(0,1) distribution, how should I proceed? (Since I dont want to do "rnorm(100,0,1)" in R for 1000 times) Thanks for help Debbie
2009 May 17
1
(no subject)
Dear R users, I incurred some problems with importing data into R. i.e. If I want to import a text file or word file which contains lots of numerical numbers, what function should I use? Please help. Thanks a lot. Debbie _________________________________________________________________ View photos of singles in your area Click Here