# Resolve Singularities in a Fit

Singularities in a Fit matrix indicates that there is insufficient data to properly solve the posed problem. A singular matrix means that it cannot be inverted properly, which is similar to dividing by zero in scalar problems.

The most simple case of singularities in a Fit happening occurs when there are three equations but four unknowns in algebra. This system cannot properly be solved. In a Fit, this issue is more likely to occur when the runs are not sufficiently independent, which will lead to a singular matrix.

- Choose a different Fit method.
- Modify the Fit settings.
- Obtain additional data.

## Singularities in a Fit

- x,y,z
- 1,2,3
- 5,2,1
- 6,4,4

It is not possible to determine which of the input variables is responsible for a change in the output response.

The conclusion is that the data set is incompatible with the Fit specification.