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DASCA Senior Data Scientist Sample Questions:

1. 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) Only ii
B) Only i
C) Both i and ii

2. Machine learning can be used in:

A) Pattern and image recognition
B) Fraud detection
C) Web search results
D) Real-time ads on web pages and mobile devices
E) All of the above

3. Which of the following errors refers to the wrong negation of a true null hypothesis?

A) None of the above
B) Type II Error
C) Logical Error
D) Type I Error
E) Hypothesis Error

4. ARIMA model is:

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

5. Which of the following can visualize variations in the base data, which can be used to identify outliers in the data for further investigation?

A) None of the above
B) Trend Analysis
C) Scatter Plot
D) Histogram
E) Box Plots

Solutions: