Data analysis with python questions with answers
128 multiple-choice questions. Open any question for its answer and explanation.
- In Pandas, what method is used to remove duplicate rows from a DataFrame based on specified columns?
- Which Python library provides tools for working with structured data and is often used in data analysis tasks, especially in financial data?
- In Pandas, what method is used to remove missing values from a DataFrame?
- Which Python library is commonly used for data visualization and exploration with a focus on producing informative statistical graphics?
- In Pandas, which method is used to apply a custom function to each element of a DataFrame or Series?
- What is the primary purpose of the "pipe" method in Pandas when chaining multiple data transformation steps?
- Which Python library provides advanced data visualization capabilities and is often used for creating complex and interactive plots?
- Which of the following can potentially change the dtype of a series?
- Point out the correct statement.
- Panel is a container for Series, and DataFrame is a container for dataFrame objects.
- In Python, which library is commonly used for visualizing decision trees and random forests in machine learning?
- Which Python library is often used for anomaly detection and outlier analysis in time series data?
- Which of the following is used for machine learning in python?
- Which Python library is commonly used for data profiling and generating summary statistics for datasets?
- In Pandas, which method is used to pivot data from long to wide format, creating a new DataFrame?
- Which Python library is commonly used for machine learning and predictive modeling?
- Which Python library is commonly used for creating interactive data dashboards and reports for data analysis and visualization?
- Which of the following is the base layer for all of the sparse indexed data structures?
- In Pandas, which method is used to sort a DataFrame by the values in one or more columns in ascending or descending order?
- Which of the following operation works with the same syntax as the analogous dict operations?
- Andrews curves allow one to plot multivariate data.
- Which of the following input can be accepted by DataFrame?
- Using . . . . . . . . on categorical data will produce similar output to a Series or DataFrame of type string.
- Series is a one-dimensional labeled array capable of holding any data type.
- Which Python library is commonly used for distributed data processing and parallel computing, especially for big data analysis?