| Interface | Description | 
|---|---|
| StreamingTestMethod | Significance testing methods for  StreamingTest. | 
| TestResult<DF> | Trait for hypothesis test results. | 
| Class | Description | 
|---|---|
| BinarySample | Class that represents the group and value of a sample. | 
| ChiSqTest | Conduct the chi-squared test for the input RDDs using the specified method. | 
| ChiSqTest.Method | param:  name String name for the method. | 
| ChiSqTest.Method$ | |
| ChiSqTest.NullHypothesis$ | |
| ChiSqTestResult | Object containing the test results for the chi-squared hypothesis test. | 
| KolmogorovSmirnovTest | Conduct the two-sided Kolmogorov Smirnov (KS) test for data sampled from a
 continuous distribution. | 
| KolmogorovSmirnovTest.NullHypothesis$ | |
| KolmogorovSmirnovTestResult | Object containing the test results for the Kolmogorov-Smirnov test. | 
| StreamingTest | Performs online 2-sample significance testing for a stream of (Boolean, Double) pairs. | 
| StudentTTest | Performs Students's 2-sample t-test. | 
| WelchTTest | Performs Welch's 2-sample t-test. |