[R] The standard deviation of measurement 1 with respect to measurement 2

Hi, I have two (different types of) measurements, say X and Y, resulting from the same set of experiments. So X and Y are paired: (x_1, y_1), (x_2, y_2), ... I am trying to calculate the standard deviation of Y with respect to X. In other words, in terms of the scatter plot of X and Y, I would li

Re: [R] Quantitative analysis of non-standard scatter plots.

How do I check that, and what quantification does it provide? Thanks, Firas. On Wed, 2008-07-23 at 21:20 +0530, Bogaso Cristofer wrote: > Have u checked skewness of data? > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Firas Sw

Re: [R] Puzzling coefficients for linear fitting to polynom

to:[EMAIL PROTECTED] > http://www.cmis.csiro.au/bill.venables/ > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Firas Swidan, PhD > Sent: Friday, 7 March 2008 6:16 PM > To: r-help@r-project.org > Subject: [R] Puzzling coeff

[R] Puzzling coefficients for linear fitting to polynom

ly(x, 2)1 poly(x, 2)2 4.667 5.6568542 0.8164966 However the fitted() result makes sense: > fitted(f) 1 2 3 1 4 9 This is very confusing. How should one understand the result of coefficients()? Thanks for any tips, Firas. -- Firas Swidan, PhD Founder and CEO Olymons: Blessing Machin

[R] Puzzling coefficients for linear fitting to polynom

ly(x, 2)1 poly(x, 2)2 4.667 5.6568542 0.8164966 However the fitted() result makes sense: > fitted(f) 1 2 3 1 4 9 This is very confusing. How should one understand the result of coefficients()? Thanks for any tips, Firas. -- Firas Swidan, PhD Founder and CEO Olymons: Blessing Machin