I am having trouble deciding what kind of statistical test I need to perform on my data to answer the question I want answered. Perhaps you can help me!
I have measurements of lengths, widths, etc. of different parts of a specimens body, as well as data that reflects shapes. For instance, I have measured the length, width, height, number of spines, and shape of the spines (either convex, concave, straight. These are recorded as Convex = 1, Concave = 2, Straight =3) of what I believe to be three different species within a genus. I have fourteen such measurements for over 300 specimens. Twelve of the variables are measured in cm to the nearest mm, and the other two variables are as outlined above for the spines, in terms of 1, 2, 3. I currently have the data split out into the three different species, but I want to know if there is statistically significant evidence for having three different species in my population... But I don't really know what kind of statistical test could be done to test this. I imagine some form of multivariate statistics will be employed, but I don't know which to pick.
Any help or ideas would be appreciated!