Data Analysis Tutorials

Visualize inequality at a glance using the Lorenz curve. Discover how to create and interpret Lorenz curves using Python to analyze inequality across income, crime, and other real-world datasets.

Learn how to create, format, and customize Excel pie charts. Discover Excel pie chart options like doughnut charts, pie of pie charts, and exploded pie charts.

The central limit theorem states that, with a sufficiently large sample size, the sampling distribution of the mean will be normally distributed, regardless of the population’s distribution. Learn its formula, key conditions, and applications in statistics and machine learning.

Build precise loan repayment tracking in Excel with clear formulas and calculations. Create a comprehensive amortization schedule to visualize how payments reduce your debt over time and plan your financial future.

Discover how to calculate the compound annual growth rate (CAGR) in Excel. Learn practical applications and advanced techniques to enhance your data analysis skills.

Master the art of visualizing data in Excel using histograms! This step-by-step guide will walk you through various methods, such as built-in charts, formulas, and the Analysis ToolPak, to help you analyze frequency distributions like a pro.

Discover how collaborative filtering powers recommendation systems in e-commerce, streaming, and more. Learn its types, benefits, challenges, and Python implementation.

Explore the determinant’s role in matrix operations, geometry, and computational methods, with step-by-step calculations in Python and R.

Learn how the NPER() function in Excel calculates the number of periods required to pay off a loan or reach an investment goal. Discover its syntax, use cases, and practical examples.

Transpose data in Excel using Paste Special, the TRANSPOSE() function, or Power Query. Learn how to switch rows to columns, columns to rows, and entire tables.

Learn how to use Excel's essential financial function to determine periodic payments for loans, mortgages, and investments. Discover proper syntax and advanced applications for financial modeling.

Use Excel’s COUNTIF() function to quickly count cells matching specific criteria like text, numbers, dates, and wildcard characters.