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DASCA Senior Data Scientist Sample Questions:

1. Which of the following is a Python library for fitting Bayesian networks to real data?

A) SciLib
B) MCMC
C) PyMC
D) SCIMC
E) MyLib

2. A burn down chart shows:

A) The declining energy of the team
B) The rate of reduction of budget for a project
C) The number of hours worked after dark
D) The volume of work and features completed

3. Which of the following is NOT Structured data?

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

4. Which of the following is correct about customer lifetime value (CLTV)?
i. Most organizations determine the current customer lifetime value (CLTV) based on historic sales over past
12 to 18 months
ii. The goal of the CLTV score is to help marketing and store personnel to determine the "value" of a customer

A) Both i and ii
B) Only ii
C) Only i

5. Which of the following is TRUE for Tensor?

A) Tensor is an array of floating-point numbers
B) Tensor is used to describe multidimensional arrays of numbers on which we perform linear operations
C) In Tensor, there can be arbitrarily many dimensions to the array
D) Both B and C
E) All of the above

Solutions: