Statistics on-line calculators

Here are some on-line calculators you can use directly from your desk (without using MINITAB!)

You have to enter the data directly yourself – and paste the results into your own document, where you can reformat it or edit it to your heart’s content!

Analysis

Comment (and URL)

WebStat

All-purpose calculator, using Java Applets. Similar (but not identical) to MINITAB

Good for contingency tables, t-tests (but does not contain non-parametric tests)

http://dostat.stat.sc.edu/webstat/3.0/oldindex.html

Use with the file internet.txt as sample data (third item in this table)

StatCrunch

The updated, and commercial version of WebStat (above) It is simple to use and with extensive help facilities. Highly Recommended!

This version contains non-parametrics and superior storage and output facilities.

Well worth the very modest price ($5 for 6 months, $8 for a year) http://www.statcrunch.com

Use with the file internet.txt or internet2.txt as sample data
(third item in this table)

internet.txt

internet2.txt

(Sample
data)

The sample data file (internet.txt) can be downloaded here. Save it on your own computer as a text (.txt) file under the name internet.txt

http://mh-web.co.uk/statstore/internet.txt

for the same file as above but with summary data included in it

General

Excellent all purpose (but only 2x2 chi-square)

http://www.graphpad.com/quickcalcs/

HyperStat

Good for descriptive statistics of a continuous variable (and especially for detecting skewness and kurtosis of a distribution). Paste the results in!

http://www.ruf.rice.edu/~lane/stat_analysis/descriptive.html

Chi-Square

Allows you to label- but does not give you an exact p

http://www.georgetown.edu/faculty/ballc/webtools/web_chi.html

Chi-square

Gives you a more exact ‘p’ – enter d.f. and Chi-square (c²⁾

http://www.anu.edu.au/nceph/surfstat/surfstat-home/tables/chi.php

t-test

Useful for continuous data – enter it manually for each group

http://www.graphpad.com/quickcalcs/ttest1.cfm

t-tests

Several t-test options available, including one tailed tests on a single sample