Instat
What is Instat?
Instat is a general statistical package. It is simple enough to be useful in teaching statistical ideas, yet has the power to assist research in any discipline that requires the analysis of data.Instat began life on a BBC microcomputer. It was first used on a training course on 'statistics in agriculture' held in Sri Lanka during 1983. The BBC micro version was marketed commercially from mid-1985, with the DOS version for PCs becoming available in 1987. From 1994 Instat was free-of-charge. Updated DOS versions were released in 1996 and 1997.
Instat has been used widely in the UK and elsewhere by a range of companies, research institutes, schools, colleges, universities and private individuals. At Reading it has been used extensively on training courses run by the SSC. It has also been used in many countries on statistics courses and on courses related to health, agriculture and climatology.
'Instat+' (i.e. the Windows version of Instat) has been developed mainly because of its continued use for the analysis of climatic data. Funding from the UK Met Office for a new climatic version, supplemented by support from the SSC and the efforts of other friendly collaborators, led to the Windows version, which was first used on training courses in 1999.
The full version of Instat may be downloaded and used for non-commercial purposes by any individual free of charge. There is no copy-protection, time limit or data size restriction, other than Instat's inherent size limitations.
Instat can be supplied on a CD, for which there is a minimum charge of £40. When the software is supplied on CD, a printed copy of the tutorial (pdf, 679KB) is also provided.
Get Instat now.
SSC-Stat(Excel Add on packs)
The full version of SSC-Stat may be downloaded and used for non-commercial purposes by any individual free of charge. There is no copy-protection, time limit or special data size restriction.
SSC-Stat can be supplied on a CD, for which there is a minimum charge of £40. When the software is supplied on CD, a printed copy of the SSC-Stat Tutorial (pdf, 290KB) is also provided.
Get SSC-Stat now.
Diversity index Calculator(Add-in for MS-EXCEL)
Diversity indices are used in the analysis of multi-species ecological data. Several indices have been proposed, each with its own strengths. There are two aspects to diversity: species richness and evenness. Indices are available that measure these two components separately.
A good introductory reference is the book Ecological Diversity and its Measurement (1988) by Anne Magurran. A revised and updated version, entitled Measuring Biological Diversity, was recently published by Blackwell Science.
The SSC's Diversity Add-In for Microsoft® Excel™ contains functions for the most widely-used indices. Once the add-in is loaded, its functions are used in much the same way as Excel's built in-functions.
Get the Diversity Add-In now (zip file, 36KB)
The zip file contains the add-in itself (Diversity.xla), some notes on installing and using it, and an Excel workbook with some examples.
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