Discussion, chapter 2 q&a, chapter 3 q&a

discussion: 

What’s simple random sampling? Is it possible to sample data instances using a distribution different from the uniform distribution? If so, give an example of a probability distribution of the data instances that is different from uniform (i.e., equal probability).

Chapter 2 Q&A: See the attachments 

      Chapet 2 video: https://www.screencast.com/t/swJSFMPlDU         (Part 1)

                                https://www.screencast.com/t/TZZrWRgXu6f         (Part 2)

Chapter 3 Q&A: See the attachments

                 Textbook : Read Tan, Steinbach, & Kumar – Chapter 3 – Exploring Data

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