Correct Answer : Factor
Explanation : The factor stores the nominal values as a vector of integers in the range [1… k] (where k is the no. of unique values of the nominal variable), and an internal vector of character strings (the original values) mapped to these integers.
Correct Answer : Descriptive
Explanation : Descriptive is the simplest class of analytics. Predictive analytics can only forecast what might happen in the future because all predictive analytics are probabilistic in nature.
Correct Answer : Classification
Explanation : Classification techniques are widely used in data mining to classify data.
Correct Answer : SAS
Explanation : SAS (Statistical Analysis System) is a software suite developed by SAS Institute for advanced analytics.