Which method should you use?

You need to select a feature extraction method.

Which method should you use?
A . Spearman correlation
B . Mutual information
C . Mann-Whitney test
D . Pearson’s correlation

View Answer

Answer: A

Explanation:

Spearman’s rank correlation coefficient assesses how well the relationship between two variables can be described using a monotonic function.

Note: Both Spearman’s and Kendall’s can be formulated as special cases of a more general correlation coefficient, and they are both appropriate in this scenario.

Scenario: The MedianValue and AvgRoomsInHouse columns both hold data in numeric format. You need to select a feature selection algorithm to analyze the relationship between the two columns in more detail.

References: https://docs.microsoft.com/en-us/azure/machine-learning/studio-module-reference/feature-selection-modules