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DASCA Senior Data Scientist Sample Questions:

1. Bernoulli random variable is a type of:

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

2. Which of the following is a DevOps Practice?

A) All of the above
B) Continuous delivery
C) Continuous integration
D) Continuous build

3. What is TRUE for "rehashing"?

A) All of the above
B) Both A and B
C) Key/value pairs from the original table can be inserted into the new, larger one
D) Allocate a new, larger hash table in memory
E) It requires a new hash function, which maps values into a larger range of integers

4. Maximum Likelihood Estimation (MLE) is a way to frame:

A) Large class of problems in HDFS
B) Small class of problems in HDFS
C) Large class of problems in Data Science
D) Small class of problems in Data Science
E) Both A and C

5. The Big Data Vision Workshop process is ideal for organizations who:

A) Have a wealth of data that they do not know how to monetize
B) Have a desire to leverage the Big Data Vision Workshop to identify where and how to leverage data and analytics to power their business models
C) All of the above
D) Both A and B
E) Have a desire to leverage Big Data to transform their business but do not know where and how to start

Solutions: