You have been assigned to run a logistic regression model for each of 100 countries, and all the
data is currently stored in a PostgreSQL database. Which tool/library would you use to produce
these models with the least effort?

Your organization has a website where visitors randomly receive one of two coupons. It is also
possible that visitors to the website will not receive a coupon. You have been asked to determine if
offering a coupon to visitors to your website has any impact on their purchase decision.
Which analysis method should you use?

Imagine you are trying to hire a Data Scientist for your team. In addition to technical ability and
quantitative background, which additional essential trait would you look for in people applying for
this position?

What describes the use of UNION clause in a SQL statement?

You have run the association rules algorithm on your data set, and the two rules {banana, apple}
=> {grape} and {apple, orange}=> {grape} have been found to be relevant. What else must be
true?

When would you use a Wilcoxson Rank Sum test?

In the MapReduce framework, what is the purpose of the Reduce function?

Which of the following is an example of quasi-structured data?

A Data Scientist is assigned to build a model from a reporting data warehouse. The warehouse
contains data collected from many sources and transformed through a complex, multi-stage ETL
process. What is a concern the data scientist should have about the data?

Which word or phrase completes the statement? Emphasis color is to standard color as _______ .