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I have an (another) assemblage that seems to be biased to one side of a species. I have looked back at Windmill Hill (Edwards and Horne 1997), the only other example I know of sidedness but the claims on an over-abundance of sides of a couple of particular elements were not supported by statistical analysis. I have a range of elements, which I can use to produce a minimum number for each side - what springs to my mind is a chi-squared test expecting equal numbers of each element - but can I group all the different elements together to test them? So any suggestions please as to how to analyse many elements from a species to look for statistical significance of the over representation of a side? Previously I have only had one element (i.e. femur) to query which seems easier to me. All/any help welcome - has anyone written a book on statistics for zooarchaeologists yet? It would be jolly useful. jacqui