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 or median(nb10$V1)) to the mean. I
found the mean to be 408.8 and the median to be 404. Can you please explain
to me what I need to put into the program to get an answer and explain what
the answer means?
Thank You.
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I found something a little different:> median(nb10[,1])[1] 404> mean(nb10[,1])[1] 404.59 compare them.... They are different. Your sample is not perfectly symmetrical (50% above, 50% below) about the mean (ie. the third standardized moment (skewness) is not zero). This is really not a question about R, and this is not a place to get answers for homework. Good luck with your studies. Ajata Paul wrote> > Okay, so I have a homework projecr for R, and we had to input the > following link as some sort of data: > nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10"). > Afterwards, we have to use > fivenum(nb10) to find max, min, quantiles, and sd, but I'm okay with this. > The next question is where I'm stuck. The question is as follows; > Compare the median (use the quantiles or median(nb10$V1)) to the mean. I > found the mean to be 408.8 and the median to be 404. Can you please > explain to me what I need to put into the program to get an answer and > explain what the answer means? > > Thank You. >-- View this message in context: http://r.789695.n4.nabble.com/How-to-Compare-the-median-to-the-mean-tp4357520p4357544.html Sent from the R help mailing list archive at Nabble.com.
This is reallly not a list for homework help. However I'd guess that you are supposed to discuss the mean and median, not assault them with R :) I probably shouldn't do this. :( Plot the data and then discuss the mean & median John Kane Kingston ON Canada> -----Original Message----- > From: sonjamackintire at gmail.com > Sent: Sat, 4 Feb 2012 09:42:24 -0800 (PST) > To: r-help at r-project.org > Subject: [R] 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 or median(nb10$V1)) to the mean. I > found the mean to be 408.8 and the median to be 404. Can you please > explain > to me what I need to put into the program to get an answer and explain > what > the answer means? > > Thank You. > > -- > View this message in context: > http://r.789695.n4.nabble.com/How-to-Compare-the-median-to-the-mean-tp4357520p4357520.html > Sent from the R help mailing list archive at Nabble.com.____________________________________________________________ Share photos & screenshots in seconds... TRY FREE IM TOOLPACK at http://www.imtoolpack.com/default.aspx?rc=if1 Works in all emails, instant messengers, blogs, forums and social networks.