Before revision: As opposed to constants, and as opposed to other parameters which are restricted to represent meaningful data, free parameters can be adjusted to allow the models to provide helpful insights.Cosmology Glossary: Models (CosmologyScience.com) 2010 The values of free parameters used in models may be provided by previous experiments, educated guesses , or assigned randomly.
After revision: As opposed to constants, and as opposed to other parameters which are restricted to represent meaningful data, free parameters can be adjusted to allow the models to provide helpful insights.Cosmology Glossary: Models (CosmologyScience.com) 2010 The values of free parameters used in models may be provided by previous experiments, estimated , or assigned randomly.