Select the method or formula of your choice.
In This Topic
S
Notation
| Term | Description |
|---|---|
| MSE | mean square error |
R-sq
R2 is also known as the coefficient of determination.
Formula
Notation
| Term | Description |
|---|---|
| yi | i th observed response value |
 | mean response |
 | i th fitted response |
R-sq (adj)
While the calculations for adjusted R2 can produce negative values, Minitab displays zero for these cases.
Notation
| Term | Description |
|---|---|
 | ith observed response value |
 | ith fitted response |
 | mean response |
| n | number of observations |
| p | number of terms in the model |
R-sq (pred)
While the calculations for R2(pred) can produce negative values, Minitab displays zero for these cases.
Notation
| Term | Description |
|---|---|
| yi | i th observed response value |
 | mean response |
| n | number of observations |
| ei | i th residual |
| hi | i th diagonal element of X(X'X)–1X' |
| X | design matrix |
PRESS
Assesses your model's predictive ability and is calculated as:
Notation
| Term | Description |
|---|---|
| n | number of observations |
| ei | ith residual |
| hi | ith diagonal element of X (X' X)-1X' |
