Data Science Quiz

Which language is most commonly used in data science?

• Java

• C++

• Python

• HTML

What is the purpose of NumPy in Python?

• Web development

• Database access

• Data visualization

• Numerical computing

Which of the following is a data visualization library?

• Pandas

• NumPy

• Matplotlib

• Flask

Which term describes cleaning and preparing raw data?

• Data transformation

• Data training

• Data scaling

• Data modeling

Which type of chart is best for showing distribution?

• Line chart

• Pie chart

• Histogram

• Bar chart

What is the full form of CSV?

• Combined Source Value

• Comma Separated Values

• Common Separated Variables

• Code Stored View

What does df.head() return in Pandas?

• Deletes rows

• First 5 rows

• Last 5 rows

• Random 5 rows

Which algorithm is used for classification problems?

• K-Means

• Linear Regression

• K-Nearest Neighbors

• Apriori

What is overfitting in a model?

• When it fits test data well

• When it fits training data too well

• When it uses too much memory

• When it has too many features

Which one is not a supervised learning algorithm?

• Decision Trees

• Linear Regression

• K-Means

• Logistic Regression