[R] New user: Custom probability distribution
Hello, Given a probability function: p(x) = 12 / (25(x+1)) , x=0, 1, 2, 3 we generate the following values: C1 C2 0 0.48 1 0.24 2 0.16 3 0.12 Now, I'm supposed to create 50 random values using this table. In MiniTab, I simply selected Calc - Random Data - Discrete, and selected the columns, and it created 50 random values in a new column.[1] How do I do the same thing in R? [1] You may be wondering why I'm telling you this. Well, it's because if I were in your shoes, I'd think Oh, someone wants me to solve his homework.. I have already solved it using MiniTab, but I want to be able to use R instead (since I prefer NetBSD). -- Kind Regards, Jan Danielsson Te audire non possum. Musa sapientum fixa est in aure. signature.asc Description: OpenPGP digital signature __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] New user: Custom probability distribution
On 2/9/2006 2:02 PM, Jan Danielsson wrote: Hello, Given a probability function: p(x) = 12 / (25(x+1)) , x=0, 1, 2, 3 we generate the following values: C1 C2 0 0.48 1 0.24 2 0.16 3 0.12 Now, I'm supposed to create 50 random values using this table. In MiniTab, I simply selected Calc - Random Data - Discrete, and selected the columns, and it created 50 random values in a new column.[1] How do I do the same thing in R? [1] You may be wondering why I'm telling you this. Well, it's because if I were in your shoes, I'd think Oh, someone wants me to solve his homework.. I have already solved it using MiniTab, but I want to be able to use R instead (since I prefer NetBSD). You want to use the sample() function. See ?sample. Duncan Murdoch __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] New user: Custom probability distribution
rbinom(50,5,c(0.48,0.24,0.16,0.12)) On Thu, 2006-09-02 at 20:02 +0100, Jan Danielsson wrote: Hello, Given a probability function: p(x) = 12 / (25(x+1)) , x=0, 1, 2, 3 we generate the following values: C1 C2 0 0.48 1 0.24 2 0.16 3 0.12 Now, I'm supposed to create 50 random values using this table. In MiniTab, I simply selected Calc - Random Data - Discrete, and selected the columns, and it created 50 random values in a new column.[1] How do I do the same thing in R? [1] You may be wondering why I'm telling you this. Well, it's because if I were in your shoes, I'd think Oh, someone wants me to solve his homework.. I have already solved it using MiniTab, but I want to be able to use R instead (since I prefer NetBSD). __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] New user: Custom probability distribution
Jan Danielsson wrote: Hello, Given a probability function: p(x) = 12 / (25(x+1)) , x=0, 1, 2, 3 we generate the following values: C1 C2 0 0.48 1 0.24 2 0.16 3 0.12 Now, I'm supposed to create 50 random values using this table. In MiniTab, I simply selected Calc - Random Data - Discrete, and selected the columns, and it created 50 random values in a new column.[1] How do I do the same thing in R? sample( 0:3, 50, prob=c(0.48, 0.24, 0.26, 0.12)) Kjetil [1] You may be wondering why I'm telling you this. Well, it's because if I were in your shoes, I'd think Oh, someone wants me to solve his homework.. I have already solved it using MiniTab, but I want to be able to use R instead (since I prefer NetBSD). __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] New user: Custom probability distribution
Hi, you can use our package distr respectively distrEx. require(distrEx) D1 - DiscreteDistribution(supp=0:3, prob = 12/(25*(1:4))) plot(D1) r(D1)(50) hth Matthias Hello, Given a probability function: p(x) = 12 / (25(x+1)) , x=0, 1, 2, 3 we generate the following values: C1 C2 0 0.48 1 0.24 2 0.16 3 0.12 Now, I'm supposed to create 50 random values using this table. In MiniTab, I simply selected Calc - Random Data - Discrete, and selected the columns, and it created 50 random values in a new column.[1] How do I do the same thing in R? [1] You may be wondering why I'm telling you this. Well, it's because if I were in your shoes, I'd think Oh, someone wants me to solve his homework.. I have already solved it using MiniTab, but I want to be able to use R instead (since I prefer NetBSD). __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- StaMatS - Statistik + Mathematik Service Dr. rer. nat. Matthias Kohl Gottlieb-Keim-Straße 60 95448 Bayreuth Phone: +49 921 50736457 E-Mail: [EMAIL PROTECTED] Home: www.stamats.de __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
