Data Science Trivia Question and Answers

Question 1

What one of the following qualifies as a random variable?

Accepted Answer

All of the above

Answer

The outcome from the roll of a die

Answer

The outcome of exam

Answer

The outcome of flip of a coin

Question 2

Which of the subsequent tests is focused on using data to make decisions?

Accepted Answer

Hypothesis

Answer

Casual

Answer

Probability

Answer

None of the above

Question 3

Which of the following is true?

Accepted Answer

With the help of training data, machine learning focuses on making predictions based on known properties.

Answer

Prediction is the main goal of data cleaning, which is based on known properties discovered through training data.

Answer

It takes both science and art to present data in a way that both average people can understand and gain insightful knowledge from.

Answer

None of the above

Question 4

Which of the following is a measure of spread for a random variable?

Accepted Answer

Standard deviation

Answer

Variance

Answer

Empirical mean

Answer

All of the above

Question 5

The weighted average is employed in:

Accepted Answer

Forecasting

Answer

Classification

Answer

Regression

Answer

All of the above

Question 6

One of the fundamental skills in data science is which of the following?

Accepted Answer

Machine learning

Answer

Statistics

Answer

Data visualization

Answer

All of the above

Question 7

The purpose of machine learning in data science

Accepted Answer

For Prediction

Answer

For Cleaning

Answer

For Visualization

Answer

All the above