# In a regression analysis, if R-Squared = 1, then does SSE = SST?

Oct 22, 2015

NO!

#### Explanation:

If $S S E = S S T$, then ${r}^{2} = 0$

If $S S E = 0$, then ${r}^{2} = 1$

${r}^{2} = \frac{S S T - S S E}{S S T}$

hope that helped