|  | Name | Description | 
|---|
|  | Covariance(IEnumerableDouble, IEnumerableDouble) | Estimates the unbiased population covariance from the provided samples.
            On a dataset of size N will use an N-1 normalizer (Bessel's correction).
            Returns NaN if data has less than two entries or if any entry is NaN. | 
|  | Covariance(IEnumerableNullableDouble, IEnumerableNullableDouble) | Estimates the unbiased population covariance from the provided samples.
            On a dataset of size N will use an N-1 normalizer (Bessel's correction).
            Returns NaN if data has less than two entries or if any entry is NaN.
            Null-entries are ignored. | 
|  | Covariance(IEnumerableSingle, IEnumerableSingle) | Estimates the unbiased population covariance from the provided samples.
            On a dataset of size N will use an N-1 normalizer (Bessel's correction).
            Returns NaN if data has less than two entries or if any entry is NaN. |