##code chunk establishing basic settings

R Markdown

regular text outside of a chunk - treated as a comment

hist(rnorm(1000, 0, 10))

What plot was made with this command? (Sample question)

set.seed(103)
x <- rnorm(n = 10, mean = 10, sd = 2)
mean (x)
## [1] 9.298599
set.seed(x)
y <- rnorm(n = 10, mean = 10, sd = 2)
mean (y)
## [1] 9.101362
set.seed(10)
lambda <- rnorm(n = 100, mean = 1, sd = 1)
hist(lambda, xlab = "Population Growth rate (lambda)")
x <- median(lambda)
abline( v = median(lambda))

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

Including Plots

You can also embed plots, for example:

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.

Sample Questions:

What kind of objects is LETTERS? #run is(LETTERS), ?LETTERS - this is a preinstalled dataset