WSJ - NPS Score

The same requirement to the previous paper.
Please answer 3 questions under the reading material. Answer 100 words per question, minimum of 300 words in total.
Thank you for your work again. I may have more similar papers to do.
P.S. here is the course description from the syllabus:
In this course, students learn the basics of database setup and management as well as the analytical techniques and tools used in integrated marketing to assess, enhance, and profit from customer relationship management. The course reviews database technology, organization, and planning including technology needs and outsourcing considerations; sampling techniques such as nth selects and frozen files; creating powerful predictor variables such as univariate and cross-tabulations, ratios, time-series variables, and other measures. The course also covers predicting customer actions by using multiple linear regression and logistic regression to model response, payment, attrition, churn, and other factors that assist in segmentation. Students also learn how to combine prospect and customer data residing on databases with outside sources of data to drive response models.