[R] How to Compare the median to the mean?

[Ajata Paul]

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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[R] How to Calculate Percentage of Data within certain SD of Mean

[Ajata Paul]

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.

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[R] How to figure out the number of data values in a list?

[Ajata Paul]

Hello, 

I am working with the following data:

nb10 <- read.table("http://www.adjoint-functors.net/su/web/314/R/NB10";)

I need to figure out how many data values are in this list.

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