Data in Biology. Lousy data. Biological data, perhaps more than most other scientific data, has the following characteristics:. It is complex It is incomplete It is error prone It contains the answers to questions of biological function and indeed, dysfunction
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Sometimes it is obvious
Sometimes it is not
Year Int. accum. (% of cap.)
An important feature of such data is that there is only one value of the dependant variable for a given value of the explanatory variable.
Fig 1.1 from Biometry by Sokal and Rohlf (3rd editiion), 1995
Figure 2.1 from Biometry by Sokal and Rohlf, 3rd edition, 1995
This bar diagram shows the photosynthesis of three aquatic plants during experiments when they were exposed to UV light. The first group of bars shows that all three plants were healthy at the start of the experiment. The second group shows that after 5 hours of UV light one plant is still healthy but the other two are under stress. The third group shows photosynthesis after the plants were left for 20 hours with the UV lights turned off – one plant did not completely recover.