Quiz on Introduction to Data Science

What is the primary purpose of statistical inference?

• To collect all possible data

• To summarize data without interpretation

• To make conclusions about a population based on a sample

• To draw bar charts and graphs

Which of the following best justifies the use of statistical inference?

• It's easier than data visualization

• Populations are often too large to study entirely

• It is mandatory in all programming languages

• It always provides 100% accuracy

Statistical inference helps in:

• Describing one specific case in detail

• Making predictions about unknown data

• Avoiding any form of uncertainty

• Deleting unused data

Statistical inference is based on:

• Estimations and hypothesis testing

• Guesswork

• Fictional data

• Summarized charts only

Which of the following best describes the current landscape of Data Science?

• Limited to academic research only

• Only used in social media apps

• A multidisciplinary field applied across industries

• A purely theoretical concept

Which of the following is a core technical skill for a data scientist?

• Oil painting

• SQL and database management

• Singing

• Data entry

Data scientists must have strong knowledge in:

• Fashion trends

• Statistical and mathematical modeling

• Classical music theory

• Interior decoration

Which of the following tools is widely used for data visualization?

• Notepad

• Tableau or Power BI

• MS Paint

• WordPad

Why is data visualization an important part of data science?

• It makes data less accessible

• It helps hide complex patterns

• It simplifies interpretation of insights

• It replaces the need for data

Why Data Science is considered crucial in modern industries?

• It helps eliminate the use of technology

• It allows data to be hidden from users

• It supports data-driven decision making

• It reduces the need for collecting data