[R] Interpreting R -results for Bivariate Normal

HI Guys, I know that this forum is not for homework but I am trying to interpret R output code. I was just wondering if someone might be able to help. I have been given the following. For (X1,X2) distributed bivariate normal with parameters mu1 = 5.8 mu2 = 5.3 sd1 = sd2 = 0.2 and p = 0.6

Re: [R] Overlay cdf

- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of beetle2 Sent: Wednesday, 13 May 2009 3:23 PM To: r-help@r-project.org Subject: [R] Overlay cdf Hi, Is it possible to overlay a cummulative distribution function on a histogram of a gamma distribuition

Re: [R] Plot bivariate joint pdf

treat. Thankyou all Ben Bolker wrote: beetle2 wrote: For a homework question. I was wondering if rcmdr has a function to plot a graph of a bivariate function of X and Y. I have a function with joint pdf fX,Y(x,y) = x+y for 0x1 , 0y1 I've tried x - seq(0,1,.001) y - seq(0,1

[R] Overlay cdf

Hi, Is it possible to overlay a cummulative distribution function on a histogram of a gamma distribuition. I have a gamma function Sample = rgamma(1000,2.5,.8)+1.5 hist(Sample) regards -- View this message in context: http://www.nabble.com/Overlay-cdf-tp23515551p23515551.html Sent from

[R] Plot bivariate joint pdf

For a homework question. I was wondering if rcmdr has a function to plot a graph of a bivariate function of X and Y. I have a function with joint pdf fX,Y(x,y) = x+y for 0x1 , 0y1 I've tried x - seq(0,1,.001) y - seq(0,1,.001) r = x+y plot(r) but it seems to just add them together say

Re: [R] Plot bivariate joint pdf

:46 AM, Ben Bolker wrote: beetle2 wrote: For a homework question. I was wondering if rcmdr has a function to plot a graph of a bivariate function of X and Y. I have a function with joint pdf fX,Y(x,y) = x+y for 0x1 , 0y1 I've tried x - seq(0,1,.001) y - seq(0,1,.001) r = x+y

Re: [R] Binomial simulation

the relative frequencies. Btw, there is a small chance of getting a 0. Are you sure the instructor (or whoever has issued the orders) wants only from 1:10? HTH! Ranjan On Fri, 17 Apr 2009 22:23:11 -0700 (PDT) beetle2 samandbren...@aapt.net.au wrote: Not being entirely sure what you

Re: [R] Binomial simulation

Sorry guys one quick question I've graphed the histogram with hist(rbinom(n = 1000, size = 10, prob = 0.25)) How to I sum the individual values 0 to 12? regards Brendan beetle2 wrote: Hi Guy's I was wondering if someone could point me in the right direction. dbinom(10,1,0.25) I am

Re: [R] Binomial simulation

I'm thinking I will just use: results - rbinom(1000, 10, .25) d = sum(results == 0 ) df = (d/1000) df And do each individually beetle2 wrote: Hi Guy's I was wondering if someone could point me in the right direction. dbinom(10,1,0.25) I am using dbinom(10,1,0.25) to calculate

Re: [R] Binomial simulation

Thanks for pointing me to the rbinom() function regards Brendan beetle2 wrote: Hi Guy's I was wondering if someone could point me in the right direction. dbinom(10,1,0.25) I am using dbinom(10,1,0.25) to calculate the probabilty of 10 judges choosing a certain brand x

Re: [R] Binomial simulation

Hi All, Thank you for all your help. In future I will state if it's homework related. regards Brendan beetle2 wrote: Hi Guy's I was wondering if someone could point me in the right direction. dbinom(10,1,0.25) I am using dbinom(10,1,0.25) to calculate the probabilty of 10 judges

Re: [R] Binomial simulation

Not being entirely sure what you mean, I think rbinom(1000, 10, .25) may be what you want. Hi, Thanks for your reply. It is close to that but I need to know the probabilty of how many judges pick a certain brand. Just say x= 6 judges pick brand A which has P=0.25. Using R it would be:

[R] Binomial simulation

Hi Guy's I was wondering if someone could point me in the right direction. dbinom(10,1,0.25) I am using dbinom(10,1,0.25) to calculate the probabilty of 10 judges choosing a certain brand x times. I was wondering how I would go about simulating 1000 trials of each x value ? regards Brendan