search for: nb10

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2012 Feb 04
2
How to Compare the median to the mean?
Okay, so I have a homework projecr for R, and we had to input the following link as some sort of data: nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10"). Afterwards, we have to use fivenum(nb10) to find max, min, quantiles, and sd, but I'm okay with this. The next question is where I'm stuck. The question is as follows; Compare the median (use the quantiles...
2012 Feb 05
1
How to Calculate Percentage of Data within certain SD of Mean
How do you calculate the percentage of data within 2SD, 3SD, 4SD, 5SD, and 6SD of the mean? I used the following link as the data I'm working with: nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10") if this helps answer my question. Can you please explain how to calculate the SD's? Please be specific in which part of the function changes when calculating the next SD up. Thanks. -- View this message in c...
2005 Aug 04
1
Where the error message comes from?
...] c1[ind] <- sqrt(sw2)*(x*r+y*sqrt(1-r**2))+means[u] g[ind] = u mu1[ind] =means[u] }} data.frame(g=factor(g),c,e=(c1 > mean(c1)+z*sd(c1))+0) } ################################################################# sk1=sk2=sk11=sk21=skR=k1=m1=R2=R1=n10=f10=nb10=b10=s10=p10=bca10=NULL n.cp=f.cp=nb.cp=b.cp=s.cp=p.cp=bca.cp=NULL for (k in c(12,24,48)) { for (m in c(25,50,100)) { for (j in 1:1000) { #### PREPARING CLUSTER LEVEL DATA ###### d1=SimClust(k,m,mu=30,sb2=25,sw2=75,r=0.5,z=0.841621) # for p=0.2 d2=SimClust(k,m,mu=20,sb2=25,sw2=75,r...