Question

please assist with these questions! thanks!

In data extraction process for an ETL tool, which of the following is not an example of legit data source? Online Line Transaction data Point of Sales data O Customers' social media data O Competitions' data Question 2 2 pts In loading phase of an ETL tool, the transformed data gets loaded into an end target usually the Data Mart Online analytical processing Master data management Data warehouse 2 pts Question 3 Which of the following is a false statement? To predict sales from transactional data one should perform clustering analysis Roducing SSE (sum of squared orror) within cluster increases cohesion The k-means algonithm is a method for doing partitional clustering In the cluster analysis, the objects within clusters should exhibt an high amount of similanty

Answer 1

Answer :

1. Competitions data

2. Data warehouse

3. Reducing SSE within clusters increases cohesion.