Free Online CompTIA DY0-001 Practice Test

Prepare Your CompTIA DY0-001 Exam Questions with Free online DY0-001 Practice Test. Get Brilliant CompTIA Data Science Certification Exam Results with Valid DY0 001 Exam Dumps.

Page: 1 / 53

Total 265 Questions | Updated On: Apr 22, 2024

Question 1

What is the primary purpose of the CRISP-DM (Cross-Industry Standard Process for Data Mining) framework in the context of data science projects?

A : To provide a structured approach to the entire data science life cycle

B : To optimize model performance and accuracy

C : To facilitate collaboration among team members

D : To automate data preprocessing and feature engineering

Answer: A

Question 2

What does the term "event detection" refer to in the context of specialized applications in data science?

A : Preprocessing raw sensor data before analysis

B : Selecting the best hyperparameters for a neural network model

C : Evaluating the performance of a trained machine learning model

D : Identifying significant occurrences or anomalies in time-series data

Answer: D

Question 3

What is an essential consideration when communicating results and recommendations to business stakeholders?

A : Including technical jargon

B : Providing excessive detail

C : Tailoring communication to the audience

D : Avoiding visualizations

Answer: C

Question 4

What technique is commonly used for imputing missing values in a dataset by replacing them with randomly selected values from the variable?

A : Regression imputation

B : Random imputation

C : Mean imputation

D : Mode imputation

Answer: B

Question 5

Which of the following is a tree-based ensemble learning algorithm that builds multiple decision trees and merges them together to get a more accurate and stable prediction?

A : Decision tree

B : Random forest

C : Bagging

D : Gradient boosting

Answer: B

Page: 1 / 53

Total 265 Questions | Updated On: Apr 22, 2024