- The underscore was originally used as
assignment so a name such as The_Data would actually
assign the value of Data to the variable The. The
underscore is being phased out and the equals sign is being phased
- Prior to version 1.5.0 this function was called
- The tide is turning on the usage of
piecharts and they are no longer used much by statisticians. They
are still frequently found in the media. An interesting editorial
comment is made in the help page for piechart. Try ?pie to
- Such data is
- The data sets for
these notes are available from the CSI
math department and must be installed prior to this.
- such data is available from
- Of course, this
data is made up by a non-smoker so there may be some bias.
- This data came from
``Using R for Data Analysis and Graphics'' by John Maindonald.
Further discussions of this data, of a more substantial nature,
may be found on several web sites.
- A thorough explanation of the syntax and
its usage is found in the manual ``An Introduction to R'' which
accompanies the R software, and the contributed document ``Using
R for Data Analysis and Graphics'' by Maindonald. See the
appendix for more information on these.
Technically R is using a correction to the
- from the
- This example assumes the
fill ups were all roughly the same amount of gas. Otherwise, their
could be errors as the data is averaged.
- Of course,
the true distribution is for all 26 letters. This is simplified
down to look just at these 5 letters.
- This data is
simulated, however, the following article suggests a maximum
rate of 207 - 0.7(age): ``Age-predicted maximal heart
rate revisited'' Hirofumi Tanaka, Kevin D. Monahan, Douglas R.
Seals Journal of the American College of Cardiology,
- This example is taken
from example 10.1.1 in the excellent book ``The Statistical
Sleuth'', Ramsay and Schafer.
- Which is based on one
appearing in ``The Statistical Sleuth'' by Ramsey and Schafer