Re: [R] How to hold a value(Mean sq) with a string

From: Jorge Iván Vélez <jorgeivanvelez_at_gmail.com>
Date: Thu, 06 Mar 2008 17:57:37 -0500

Hi Felipe,

Try this

 dfr <- read.table(
textConnection("percentQ Efficiency

1.565    0.0125
1.94     0.0213
0.876    0.003736
1.027    0.006
1.536    0.0148
1.536    0.0162
2.607    0.02
1.456    0.0157
2.16     0.0103
1.698    0.0196
1.64     0.0098684
1.814    0.0183
2.394    0.0107
2.469    0.0221
3.611    0.0197
3.466    0.0155
1.877    0.0283
2.893    0.0189
1.851    0.009772
2.834    0.0285
1.923    0.022
2.581    0.0159
2.361    0.0053591
2.43     0.0185
1.66     0.0151
2.285    0.0084034
2.285    0.0124
2.37     0.0122
2.392    0.0146
2.244    0.0175"), header=TRUE)

temp=anova(lm(Efficiency~percentQ,data=dfr)) names(temp)
temp$"Mean Sq" # First entry is MS percentQ and second one is MS residuals

HTH Jorge

On Thu, Mar 6, 2008 at 5:49 PM, Felipe Carrillo <mazatlanmexico_at_yahoo.com> wrote:

> Hi all:
> Can someone advice me on how to hold the residuals
> Mean sq value on a string
> so it can be used in other calculations.
> I was trying something like this:
> Msquare<-dfr$Mean sq but fails..Thanks
>
> dfr <- read.table(textConnection("percentQ
> Efficiency
> 1.565 0.0125
> 1.94 0.0213
> 0.876 0.003736
> 1.027 0.006
> 1.536 0.0148
> 1.536 0.0162
> 2.607 0.02
> 1.456 0.0157
> 2.16 0.0103
> 1.698 0.0196
> 1.64 0.0098684
> 1.814 0.0183
> 2.394 0.0107
> 2.469 0.0221
> 3.611 0.0197
> 3.466 0.0155
> 1.877 0.0283
> 2.893 0.0189
> 1.851 0.009772
> 2.834 0.0285
> 1.923 0.022
> 2.581 0.0159
> 2.361 0.0053591
> 2.43 0.0185
> 1.66 0.0151
> 2.285 0.0084034
> 2.285 0.0124
> 2.37 0.0122
> 2.392 0.0146
> 2.244 0.0175"), header=TRUE)
>
> anova(lm(Efficiency~percentQ,data=dfr))
> Analysis of Variance Table
>
> Response: Efficiency
> Df Sum Sq Mean Sq F value Pr(>F)
> percentQ 1 0.00014432 0.00014432 4.3774 0.04561 *
> Residuals 28 0.00092312 0.00003297
>
>
>
> Felipe D. Carrillo
> Fishery Biologist
> US Fish & Wildlife Service
> California, USA
>
>
>
>
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-- 
Jorge Velez
Industrial Engineer
Master in Sciences (Candidate)
School of Statistics
National University of Colombia at Medellin
e-mail: jivelez_at_unal.edu.co

Visiting Fellow
Medical Genetics Branch, MGB
National Human Genome Research Institute, NHGRI
National Institutes of Health, NIH
Department of Health and Human Services, DHHS

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Received on Thu 06 Mar 2008 - 23:00:04 GMT

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