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Histogram Calculator - A Java Applet
My statistics professor used to say: "drawing histograms is a good
skill to have."
Drawing histograms is not hard, but it's tedious if you have a large
data set and are doing it by hand. Because of this, I coded this histogram
calculator.
There are quite a few things that can be said about histograms; however,
to use this calculator all you need to know is that if you enter a set
of numbers (separated by spaces, tabs, or returns) and then click the "Draw
Histogram" button, the Applet will draw
a histogram together with a summary of the data, e.g., the average, the standard
deviation, etc.
Notes:
- A drawing of a histogram lets you check
if your data set is a good fit for a Normal model. You do this by
super imposing a plot of a Normal curve: N(0, 1).
My Histogram Calculator super imposes the normal curve on top of the
histogram.
There are formal methods to assess "fit" of your data to
a Normal model, but these methods are our of scope on this page.
- To use the app, enter a set of data and click the "Draw Histogram"
button.
These are 3 test data sets: data set
1, data set 2, and data
set 3. Copy and paste the content in the text area of the Applet then
click "Draw Histogram."
| Histogram Calculator v1.0 |
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