# Starting Values for a non-linear regression

#### MayTrix

##### New Member
Hi I am trying to get the starting values for non-linear regression of a data set that follows a weibull function. I tried to do the OLS regression of this equation:

log(log(1-F(t)))=-Beta(log(lambda))-Beta(log(t)) to get the starting values.

The only problem is that F(t) is greater than 1 which leads taking a log of a negative values (not possible.) Anyother suggestions on getting these starting values.

#### hlsmith

##### Not a robit
Do you mean the intercepts? Sorry for silly question.