To open R with the dataset preloaded, right-click here and choose "Save Target As" to download the file to your computer. Then find the downloaded file and double-click it to open it in R.
The data have been loaded into the data frame olym
. Enter the command olym
to see the data. The data frame olym
has the following variables: Year
, Time
.
Here is a description of the variables:
Year
: the year of the Olympic Games, from 1896 to 2000. Time
: the winning time for the 1,500 meter race, in seconds.First, let's explore the relationship between the two quantitative variables: year
and time
. Produce a scatterplot and use it to verify that year and time are nearly linear in their relationship.
To do this in R, copy the command:
plot(olym$Year, olym$Time, xlab="Year of Olympic Games",ylab="Winning Time of 1500m Race (secs)")