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

[Felipe Carrillo]

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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