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DASCA Senior Data Scientist Sample Questions:

1. Which of these are open-source column-oriented databases?

A) Cassandra
B) Accumulo
C) HBase
D) All of the above
E) Both A and B

2. Bernoulli random variable is a type of:

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

3. The spokes of the "Hub and Spoke" analytics architecture are the analytic use cases or applications that help the organization to optimize:

A) Deliver a more compelling customer experience
B) Uncover new monetization opportunities
C) Key business processes
D) All of the above
E) Both A and B

4. Which of the following is NOT a process of Use Case?

A) Brainstorm the outcomes that the key stakeholders need to answer to facilitate making the decisions
B) Understand your organization's key business initiatives or business challenge
C) Capture the decisions that the key business stakeholders need to make in order to support the organization's key business initiatives
D) Brainstorm the questions that the key stakeholders need to answer to facilitate making the decisions
E) Identify your key business stakeholders

5. Which of the following standardizes scores similar to a percentile rank but preserves equal interval properties of a Z-score?

A) Normal Curve Equivalent (NCE)
B) Trend analysis
C) High Curve Equivalent (HCE)
D) None of the above
E) Medium Curve Equivalent (MCE)

Solutions: