The notebooks are primarily of use in conjunction with Norm MacLeod's Palaeomath articles:
Palaeomath 101, #1: Prospectus and Regression 1
Palaeomath 101, #2: Regression 2
Palaeomath 101, #3: Regression 3
The online analysis page allows you to perform four varieties of linear regression.
Data should be uploaded either as a .dat file. tpsDig files (which can be generated in Excel by saving data in two columns as a .txt file). Files must be of the format:
trilobite shape data
Acaste 7.68 1.220
Balizoma 4.76 9.113
Zynygma 17.22 0.133
The first line is a file title, with any information on it you like. Subsequent lines are tab-separated, with specimen name followed by x and y values. The title line is not optional. If you do not use a title line, the first specimen will be dropped.