Statistics !

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Hi

I have calculated some statistics using a spreadsheet program and
I have to compare three slopes of regression and their significance level in an energy species hypothesis..

-2.11
level of significance is 5%

-4.73
level of significance is 1%

-4.13
level of significance is 1%

Can anyone explain what answer is required ?

Thank you for your help ! much appreciated !!!!

G

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