Final answer:
Outlier analysis is the name for the method where you take the extreme values and see if they're more than or less than a certain number. In this method, extreme values that fall outside a predetermined threshold are identified as outliers.
Step-by-step explanation:
The method where you take the extreme values and see if they're more than or less than a certain number is called Outlier analysis (option a).In outlier analysis, extreme values that fall outside a predetermined threshold are identified as outliers. This method is commonly used in statistics to identify unusual or anomalous data points in a dataset.