Free Data Science Questions and Answers

Question 1

After gathering the data, what step does a data scientist take next?

Accepted Answer

Data Preprocessing

Answer

Data Cleaning

Answer

Data Visualization

Question 2

Which model is most commonly utilized as the standard by data analysis?

Accepted Answer

Linear Regression

Answer

Random Forest

Answer

Support Vector Machine

Answer

Decision Tree

Question 3

Which task is completed by a data scientist after the data is collected?

Accepted Answer

All of the above

Answer

Data Replication

Answer

Data Cleaning

Answer

Data Integration

Question 4

Which of the following best describes how the properties in the data are identified?

Accepted Answer

Data mining

Answer

Big data

Answer

Data wrangling

Question 5

An example of a structured data representation is __________.

Accepted Answer

Data frame

Answer

Data preparation

Answer

Database table

Answer

Functions

Question 6

We put __ in front of the mean to tell Python that we want to use the mean function from the Numpy library.

Accepted Answer

np.

Answer

ngm.

Answer

npm

Answer

ng.

Question 7

What is statistical modeling's shared objective?

Accepted Answer

Inference

Answer

Summarizing

Answer

Subsetting

Answer

None of the above

Question 8

Which of the following best describes the approach used to find previously undiscovered qualities in the data?

Accepted Answer

Unsupervised Learning

Answer

Deep Learning

Answer

Reinforcement Learning

Answer

Supervised Learning

Question 9

The ____________ principle governs how inference engines operate.

Accepted Answer

Deductive Reasoning

Answer

Bayesian Reasoning

Answer

Inductive Reasoning

Answer

Abductive Reasoning

Question 10

What are the compononents of expert system?

Accepted Answer

Knowledge Base, Inference Engine, User Interface

Answer

Data Mining, Machine Learning, Data Cleaning

Answer

Sensors, Actuators, Logic Gates

Answer

Data Storage, Data Processing, Data Visualization