Math 113 WWW Links
Just a few links to let Math 113 students find websites from class with
a minimum of typing.
More will be added as the semester progresses.
- Moore's BPS Applets - Web
resources for the fourth edition of David Moore's Basic Practice of Statistics
text. Click on the Applets link.
- check the effect of bin size on Old Faithful data (Webster West - S. Carolina).
- N=111 Exams
Histogram - apply Webster's sliding bin size to our class example.
normal probabilities - just click or slide the boundaries to find the
probability of the shaded region - or try the more Accurate
Normal Calculator where you enter the endpoints numerically. Both
applets are demos from Gary McClelland's Seeing Statistics project.
- Guessing Correlations
- a neat "game" to show the relationship between correlations and scatterplots
Click on the "Correlation" box to play. Part of the CUWU Statistical Program
at Illinois-Champaign-Urbana. See how many you can match without missing.
If the link doesn't work, try a local
version on the T:drive.
a Regression Line by "Eye" Click the "Begin" box to bring up a scatterplot.
Use your mouse to draw a line on the scatterplot. The MSE error is computed
(i.e. "average" squared error). Check the minimum MSE and see how close
you can get. Click the box to see the least squares line. You
can also guess and check the correlation. This applet is part of the
Rice Virtual Lab in Statistics. (Note: Netscape 4.06 or better is required
for Java 1.1)
in Regression - see the effects of adding an outlier to a least squares
line. (Webster West - S. Carolina).
Approximation to Count data - see how the distribution of counts(binomial)
in a sample relate to the sample size (n) and proportion (p). Note:
The sample proportion is just count/n so this helps see how well the normal
curve fits the sampling distribution of a sample proportion. Try it
for n=12 and p=0.1, 0.2, 0.4, 0.5, 0.6, 0.8, and 0.9. (Rice Virtual Lab in
Interval Simulator - (CUWU Statistical Program) You will first need
to define your "population" by specifying the values and their probabilities.
- For a quick demo, choose the "Die" option and a number of sides. Click
on "Accept Box" to see the population model.
- To simulate CI's for a proportion, choose the "Coin" option and specify
the population p. Again click on the "Accept Box" to see the population
- Click on the "Confidence Intervals" button, then specify n, CI level
and the number of intervals to simulate.
Interval Simulator - (Rice Virtual lab in Statistics). Simulates
samples of size n=10, 15, or 20 from a population with mean 50 and st. dev.
10. Window shows conficence intervals for 100 samples, highlighting
those that miss 50 at a 95% or 99% level. (Note: Netscape 4.06 or better
is required for Java 1.1)
to intereseting data sources on the Web.
Sports Data Page
- Links to current and archived data related to various sports.
Last updated on 09/05/99
W.H. Freeman has a website to support David Moore's Basic
Practice of Statistics. Look for online quizzes, datasets (in
format), and a pfd version of the formula card.