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DASCA Senior Data Scientist Sample Questions:

1. Which of the following is NOT Structured data?

A) Relational databases
B) Data tables
C) None of the above
D) XML
E) CSV files

2. Which of the following is TRUE about monetization exercise?

A) The monetization exercise process then seeks to identify complementary or secondary recommendations that can be packaged and delivered along with that product or service
B) Both B and C
C) The monetization exercise provides an opportunity to uncover new product and/or service opportunities
D) The monetization exercise works by first understanding the product usage patterns and customer usage behaviors associated with a particular product and service
E) All of the above

3. Bernoulli random variable is a type of:

A) Sometimes Discrete or sometimes Continuous random variable
B) Discrete random variable
C) Continuous random variable
D) Both A and B

4. In regression, the principle of machine learning is used to optimize the parameters to:

A) Calculate the closest possible outcomes
B) Minimize the approximation error
C) None of the above
D) Both A and B

5. Spark is written in:

A) Scala
B) C
C) Java
D) Python
E) C++

Solutions: