dataset - DataFrame of categorical labels and continuous features.
featuresCol - Name of features column in dataset, of type Vector (VectorUDT)
labelCol - Name of label column in dataset, of any numerical type
DataFrame containing the test result for every feature against the label.
This DataFrame will contain a single Row with the following fields:
- pValues: Vector
- degreesOfFreedom: Array[Long]
- fValues: Vector
Each of these fields has one value per feature.