what sort of test should i be doing?

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spencerocks
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Post by spencerocks » Wed Aug 24, 2005 9:58 pm

hey,

i have my results for my biology fieldwork, i've had all summer to do it but i've left it until the end and i've forgotten which statistical test i'm meant to be doing.

i have been taught the mann whitney U test, the t-test and the spearman's rank.. but i'm not sure which one to do?

for my experiment i did a belt transect going away from a set of trees, 20 metres and 20 recordings, i took soil temperatures and species density of 1 species, my hypothesis was that further away from the trees there would be a higher density of the birdsfoot trefoil because of competition in the environment from roots of the trees for water and nutrients.

my results support this hypothesis.. but all i have is results for soil temperature, above ground temperature, and soil samples for 0m, 10m and 20m.

what sort of test should i be doing? i didn't want to make a whole new post considering it's a n00b question

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MrMistery
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Post by MrMistery » Thu Aug 25, 2005 6:03 pm

It's better this way...
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

spencerocks
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Post by spencerocks » Thu Aug 25, 2005 6:35 pm

oh okay, thanks.

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