I have a question regarding my logic of how to go about checking for the significance between two average slopes. I hope my message comes across clear.
The data I am analyzing consists of two sets, each with 25 slope values (and a corresponding standard deviation) and 25 y-intercepts (with corresponding standard deviation).
I then average these slopes and y-intercepts, along with their corresponding standard deviations. Thus I get the average slopes and average standard deviations -- I actually average the variance(M1, M2, S1, S2).
How do I go about testing for significance between these average slope values?
I read: Test a significant difference between two slope values, but this is for the case with simply two slopes. Can I perform the t-test as mentioned in the above link using the M1, M2, S1, S2 I calculated?
