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DASCA Senior Data Scientist Sample Questions:

1. Which of the following can be classified as factor analysis in machine learning?

A) Both A and B
B) Exploratory factor analysis
C) None of the above
D) Confirmatory factor analysis

2. Which of the following is a trend analysis component of time series decomposition?

A) Cyclical
B) Irregular
C) Both A and B
D) Seasonal
E) All of the above

3. What is TRUE for "rehashing"?

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

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

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

5. Which of the following is correct?

A) DataFrame is similar to SQL tables or R data frames
B) Both A and B
C) The central object in Pandas is called a DataFrame
D) All of the above
E) A data frame is a table with rows and columns

Solutions: