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DASCA Senior Data Scientist Sample Questions:

1. Data wrangling is the process of getting the data from:

A) Its raw format into something suitable for more conventional analytics
B) Its modified meaning format into something suitable for more conventional analytics
C) Both A and B
D) None of the above

2. Which of the following statements is correct?

A) Apache claimed that Spark is able to run parallel jobs 50 times faster in memory and 5 times faster on disk in comparison to the traditional Hadoop MapReduce
B) Apache claimed that Spark is able to run parallel jobs 100 times faster in memory and 10 times faster on disk in comparison to the traditional Hadoop MapReduce
C) Apache claimed that Spark is able to run parallel jobs 10 times faster in memory and 100 times faster on disk in comparison to the traditional Hadoop MapReduce
D) Apache claimed that Spark is able to run parallel jobs 1000 times faster in memory and 100 times faster on disk in comparison to the traditional Hadoop MapReduce

3. What is the agenda of discussion at a "stand up" meeting of an Agile team?

A) Any roadblocks they are running into
B) What they are planning to do today
C) What they accomplished the previous day
D) Both A and B
E) All of the above

4. ARIMA model is:

A) Autoregressive moving average
B) Autoresponsive moving average
C) Autoreactive moving average
D) Autointeractive moving average
E) All of the above

5. In unsupervised learning, learning takes place by based on these deductions in input data and developing patterns:

A) Detecting irregularities
B) Both A and B
C) Detecting regularities
D) None of the above

Solutions: