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DASCA Senior Data Scientist Sample Questions:

1. Which of these statements reflects a null hypothesis?

A) Men will score higher than women on spatial awareness
B) Women will score higher than men on empathy
C) There will be no relationship between caffeine consumption and performance
D) As temperature increases, so too will the level of aggression
E) There will be a significant difference between group 1 and group 2

2. Which of the following is TRUE about Avro?

A) Avro is based on Remote Procedure Call (RPC)
B) Both A and B
C) Avro is a data serialization framework
D) None of the above

3. Which of the following is main Machine Learning Library in Python?

A) Matplotlib
B) NumPy
C) SciPy
D) Scikit-learn
E) None of the above

4. Which of the following is the most important part of Hadoop?

A) MapReduce Framework
B) Both A and B
C) Both B and C
D) Spark Framework
E) Hadoop Distributed File System (HDFS)

5. Which of the following is NOT Structured data?

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

Solutions: