please make sure to read Chapter 6 of uploaded document and provide comprehensive responses to the following:

(a) In the use of a categorical variable with n possible values, explain the following:
1. Why only n – 1 binary variables are necessary
2. Why using n variables would be problematic

(b) Describe how logistic regression can be used as a classifier.

(c) Discuss how the ROC curve can be used to determine an appropriate threshold value for a classifier

(d) If the probability of an event occurring is 0.4, then

1. What is the odds ratio?
2. What is the log odds ratio?

Requirements:
Work must be 3 FULL pages(more than 1500 words), single spaced, 12 font Times New Roman. The cover and reference page must be on separate pages with at least 8 reputable sources. You should have at least one in text citation for every reference and try to use reference other than or in addition to the uploaded textbook. Must contain a properly formatted in-text citation and scholarly reference.

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