jmaccherone

Results 4 comments of jmaccherone

R function sample()

Replace = TRUE means once you've drawn a random number from the sample, that number gets placed back into the sample and can be drawn again. Say you have a...

R function data.frame()

Here is a data.frame called mtcars. ![screen shot 2013-06-26 at 8 49 47 am](https://f.cloud.github.com/assets/1315352/709078/ef6b0a7e-de5e-11e2-9dda-816ad8a571a9.png)

R function hist()

Breaks is how many bars you want to draw in the histogram or how finely you want to see the data. The first histogram is without giving the breaks parameter,...

R function str()

I guess the easiest way to think of it is an vector is like an array : {1, 2, 3, 4, 5, 6 ,7} and a data frame is like...