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
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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
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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
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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
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