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

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. -- View this message in context: http://r.789695.n4.nabble.com/How-to-figure-out-the-number-of-data-values-in-a

[R] 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 t

[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