Intro to Data Mining

After reviewing chapter 9 on anomaly detection this week, answer the following questions in essay format.

What are the characteristics of anomaly detection? 
What are the detection problems and methods?
What are the statistical approaches when there is an anomaly found?
Compare and contrast proximity and clustering based approaches.

In an APA7 formatted essay answer all questions above.  There should be headings to each of the questions above as well.  Ensure there are at least two-peer reviewed sources to support your work. The paper should be at least two pages of content (this does not include the cover page or reference page).