Databricks Certified Professional Data Scientist Exam Practice Test

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Total 138 questions

Question 1

Which of the below best describe the Principal component analysis



Answer : A

Question 2

You have collected the 100's of parameters about the 1000's of websites e.g. daily hits, average time on the websites, number of unique visitors, number of returning visitors etc. Now you have find the most important parameters which can best describe a website, so which of the following technique you will use



Answer : A

Question 3

Refer to the exhibit.

You are building a decision tree. In this exhibit, four variables are listed with their respective values of info-gain.

Based on this information, on which attribute would you expect the next split to be in the decision tree?



Answer : A

Question 4

You are asked to create a model to predict the total number of monthly subscribers for a specific magazine. You are provided with 1 year's worth of subscription and payment data, user demographic data, and 10 years worth of content of the magazine (articles and pictures). Which algorithm is the most appropriate for building a predictive model for subscribers?



Answer : A

Question 5

In which phase of the analytic lifecycle would you expect to spend most of the project time?



Answer : B

Question 6

Which activity is performed in the Operationalize phase of the Data Analytics Lifecycle?



Answer : A

Question 7

As a data scientist consultant at ABC Corp, you are working on a recommendation engine for the learning resources for end user. So Which recommender system technique benefits most from additional user preference data?



Answer : B

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Total 138 questions