Exploratory Data Analysis Quiz

What is the main purpose of Exploratory Data Analysis (EDA)?

• Data cleaning

• Identifying patterns and insights from data

• Building machine learning models

• Deploying data pipelines

Which of the following Python libraries is mainly used for working with structured data in tabular format?

• NumPy

• Pandas

• Seaborn

• Matplotlib

What type of data structure does Pandas use to store tabular data?

• Array

• List

• DataFrame

• Dictionary

Which method is used to read a CSV file into a Pandas DataFrame?

• pd.load_csv()

• pd.read_csv()

• pd.open_csv()

• pd.import_csv()

Which of the following is NOT a measure of central tendency?

• Mean

• Median

• Mode

• Variance

Which visualization is best for identifying outliers in a dataset?

• Line plot

• Box plot

• Scatter plot

• Pie chart

What does the Interquartile Range (IQR) help detect?

• Missing values

• Outliers

• Correlation

• Mean of the dataset

Which visualization technique is best for understanding the distribution of a single numerical variable?

• Scatter plot

• Histogram

• Bar chart

• Pie chart

Which method is used to compute summary statistics of a DataFrame in Pandas?

• df.info()

• df.describe()

• df.summary()

• df.statistics()

What does a scatter plot primarily help visualize?

• Distribution of a single variable

• Relationship between two numerical variables

• Frequency of categorical data

• Summary statistics of a dataset