Hello, I have some questions.
When I have a linear model in JMP, I want to force intercept to zero.
So, In Fit Special, I chose "Constrain Intercept to 0" then I got the new output from JMP.
My questions are
1) why JMP does not provide R-squared when intercept becomes zero?
2) R-squared is calculated by SSR/SST, can I calculate R-squared by myself using the data JMP provides? If I calculated by myself, it's higher than before. Is this possible? In this case, it says R-squared is 99%. Can I say this R-squared is correct?
![JK_1-1604492223545.png JK_1-1604492223545.png](https://community.jmp.com/t5/image/serverpage/image-id/28071i009C4C0052704C97/image-size/medium?v=v2&px=400)
Thanks,
Jin.W.Kim