## Index of On-line Stats Calculators

- Descriptive Statistics (mean, standard deviation, 5-number summary, normal test, etc)
info

Display advice (*How to Lie with Statistics*)
info

Display options (error bars, boxplots, cumulative fraction, histogram, etc.)
info
- Calculate: 1 data-set with between 3 and 1024 points,
bulk data entry, Log-ready, cumulative fraction display
- Calculate: 2 data-sets with between 10 and 1024 points,
bulk data entry, cumulative fraction display, KS-test comparison
- Calculate: 1 to 26 data-sets each with between 10
and 1024 points,
bulk data entry, boxplot display

- Calculate:
*z*-Test: are two results (value+normally distributed error) really different?
- Student's
*t*-Test: Unpaired
info
- Calculate: 2 data-sets with between 3 and 1024 points,
bulk data entry, boxplot display

- Student's
*t*-Test: Paired
info
- Calculate: 2 data-sets with between 3 and 99 points,
pointwise data entry

- Kolmogorov-Smirnov Test
info
- Calculate: 2 data-sets with between 10 and 1024 points,
bulk data entry, descriptive stats, cumulative fraction display

*X*^{2} Test: Observed and Expected Counts
info
- Calculate: 2 to 99 pairs of observed and expected counts,
pointwise data entry

*X*^{2} Contingency Tables
info
- Calculate: Contingency tables up to 9×9 ,
pointwise data entry

- Exact Contingency Tables (Fisher Test)
info
- Calculate: Exact one-sided analysis of
2×2 contingency tables, pointwise data entry
- Calculate: Exact two-sided analysis of up to
6×6 contingency tables,
pointwise data entry

- ANOVA: ANalysis Of VAriance between groups
info
- Calculate: 3 to 26 groups of data with at most
1024 data-points in any one group, bulk data entry, several display options

- Ordinary Least Squares (Regression,
*R*)
info
- Calculate: 3 to 99 data pairs,
choice of functions to fit, scatter plot with trendline

- Alternatives to Ordinary Least Squares
info
- Curve Fits
info and more info
- Calculate: Fit to a variety of functions with or without
x-error/y-error. Bulk dat entry. WAPP

### Data Entry Terms Defined

**pointwise data entry**

An input box for each data point in a data set:

This sort of data entry is generally limited to 99 data points. Blank boxes
are ignored.

**bulk data entry**

One input box for all data points in a data set:

This sort of data entry is generally limited to 1024 data points.
Individual data-points are separated by spaces, commas, tabs, or newlines.
If you have the data available on a different screen, you should
be able to copy and paste it into the bulk data box.
The above two data input examples are transmitted as identical
data-sets.