Re: [R] Using known errors and error bars

2004-05-10 Thread Sebastian Schubert
> What do you actually know? > > You don't have `known errors', as if you did you could correct the >values. > I doubt if you actually have a known range, more likely a standard error > or a confidence interval. (If you think you do have a known range, how > do > you know?) Firstly, I

Re: [R] Using known errors and error bars

2004-05-09 Thread Prof Brian Ripley
What do you actually know? You don't have `known errors', as if you did you could correct the values. I doubt if you actually have a known range, more likely a standard error or a confidence interval. (If you think you do have a known range, how do you know?) And if A is not known exactly, lin

Re: [R] Using known errors and error bars

2004-05-09 Thread Gabor Grothendieck
See plotCI in package gregmisc. Sebastian Schubert gmx.de> writes: : : Hi, : : I'm now to R and hope (actually, I'm quite sure) you can help me. I made : an experiment and measured two values. As I know the errors of these : values I want to use them with the linear regression, : eg : V

[R] Using known errors and error bars

2004-05-09 Thread Sebastian Schubert
Hi, I'm now to R and hope (actually, I'm quite sure) you can help me. I made an experiment and measured two values. As I know the errors of these values I want to use them with the linear regression, eg Value A 1.1+-0.02 1.9+-0.05 3.05+-0.03 4.0+-0.01 5.1+-0.06 Value B 4.2+-0.14 5.