# Bayesian Pearson Correlation: Bayes Factor

You can specify the method that is used to estimate the Bayes factor. The following options are available only when either the Estimate Bayes Factor or User Both Methods Bayesian Analysis option is selected.

- JZS Bayes factor
- When selected, invokes the Zellner-Siow’s approach. This is the default setting.

- Fractional Bayes factor
- When selected, you can specify the fractional Bayes factor and null hypothesis value. For the fractional Bayes factor, you must specify a value ∈ (0,1). The default value is 0.5.