Assignment1_R_Complete.txt

> #1.0  Open R.  The first line of text in the console window tells you which version of R you are running (this should be version 3.1.2).  Copy this line of text into a document, to verify that you’ve installed the correct version.
> #R version 3.1.2 (2014-10-31) -- "Pumpkin Helmet"
> #1.1 Calculate the cube root of 2015, as follows:
> 2015^(1/3)
[1] 12.63063
> #1.2 Find the absolute value of 5.7 minus 6.8 divided by .58:
> abs(5.7-6.8)/.58
[1] 1.896552
> #1.3 Create a list of integers from 1 to 12 and call it “a”:
> a=1:12
> a
 [1]  1  2  3  4  5  6  7  8  9 10 11 12
> #1.4 Create a sequence of odd numbers from 1 to 11:
> b = c(1, 3, 5, 7, 9, 11)
> b
[1]  1  3  5  7  9 11
> #1.5 Create the same sequence in another way:
> c = seq(1,11, 2)
> c
[1]  1  3  5  7  9 11
> #1.6 Take the natural log (ln) of a. (Note that this is done to the entire “vector” called a.)
> ln.a = log(a)
> ln.a
 [1] 0.0000000 0.6931472 1.0986123 1.3862944 1.6094379 1.7917595 1.9459101
 [8] 2.0794415 2.1972246 2.3025851 2.3978953 2.4849066
> #1.7 Compute the squares of the odd numbers from 1 to 11.
> d=b^2
> d
[1]   1   9  25  49  81 121
> #1.8 Use ?sd to view the help file for the sd function.  What does it do?
> ?sd
starting httpd help server ... done
> #?sd opens up the R Help window and provides the description, usage, arguments, details, and examples for the standard deviation
> #1.9. Create a variable Name that contains your first name.
> Name = "Christopher"
> paste("My name is", Name)
[1] "My name is Christopher"
>