On Sat, Mar 21, 2009 at 5:13 PM, UBC <cheong0...@hotmail.com> wrote: > > so i am having this question > what should i do if the give data file (.txt) has 4 columns, but different > lengths? > how can i read them in R? > any idea for the following problem? > > > Gas consumption (1000 cubic feet) was measured before and after insulation > was put into > a house. We are interested in looking at the effect of insulation on gas > consumption. The > average outside temperature (degrees celcius) was also measured. The data > are included in > the file "insulation.txt". > > (a) Determine if insulation in the house effects the average gas > consumption. > (b) How much extra gas is used when there is no insulation? Provide an > interval estimate > as well as a point estimate. > > heres the content in "insulation.txt" (u can just copy and paste it to the > notepad so can be read in R) > > Before insul After insul. > temp gas temp gas > -0.8 7.2 -0.7 4.8 > -0.7 6.9 0.8 4.6 > 0.4 6.4 1.0 4.7 > 2.5 6.0 1.4 4.0 > 2.9 5.8 1.5 4.2 > 3.2 5.8 1.6 4.2 > 3.6 5.6 2.3 4.1 > 3.9 4.7 2.5 4.0 > 4.2 5.8 2.5 3.5 > 4.3 5.2 3.1 3.2 > 5.4 4.9 3.9 3.9 > 6.0 4.9 4.0 3.5 > 6.0 4.3 4.0 3.7 > 6.0 4.4 4.2 3.5 > 6.2 4.5 4.3 3.5 > 6.3 4.6 4.6 3.7 > 6.9 3.7 4.7 3.5 > 7.0 3.9 4.9 3.4 > 7.4 4.2 4.9 3.7 > 7.5 4.0 4.9 4.0 > 7.5 3.9 5.0 3.6 > 7.6 3.5 5.3 3.7 > 8.0 4.0 6.2 2.8 > 8.5 3.6 7.1 3.0 > 9.1 3.1 7.2 2.8 > 10.2 2.6 7.5 2.6 > 8.0 2.7 > 8.7 2.8 > 8.8 1.3 > 9.7 1.5 > > > > thx and any ideas would help.
Dude- really? This is just a funky-format version of the whiteside data found in the MASS package: library(MASS) whiteside See the posting guide (http://www.r-project.org/posting-guide.html), especially the section on homework questions. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
