What is LOESS used for?

Which word or phrase completes the statement? Mahout is to Hadoop as MADlib is to
____________ .

In linear regression modeling, which action can be taken to improve the linearity of the relationship
between the dependent and independent variables?

You have been assigned to do a study of the daily revenue effect of a pricing model of online
transactions. All the data currently available to you has been loaded into your analytics database;
revenue data, pricing data, and online transaction data. You find that all the data comes in
different levels of granularity. The transaction data has timestamps (day, hour, minutes, seconds),
pricing is stored at the daily level, and revenue data is only reported monthly. What is your next
step?

Which SQL OLAP extension provides all possible grouping combinations?

What is the primary bottleneck in text classification?

Which characteristic applies only to Business Intelligence as opposed to Data Science?

You have been assigned to run a linear regression model for each of 5, 000 distinct districts, 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 customer provided you with 2, 000 unlabeled records and asked you to separate them into
three groups. What is the correct analytical method to use?

You are performing a market basket analysis using the Apriori algorithm. Which measure is a ratio
describing the how many more times two items are present together than would be expected if
those two items are statistically independent?