If you have experience with R or want a quick way to generate a regression with statsmodels using a pandas DataFrame, you can ...

Tools like Excel and Google Sheets are ubiquitous these days, and learning how to use them more effectively will quickly ...

Have you ever stared at a tangled web of paired columns in your dataset—”Size 1/Value 1,” “Size 2/Value 2,” and so on, wondering how to make sense of it all? It’s a common frustration for anyone ...

The advantage of Python is that you can apply operations to larger datasets with hundreds, even thousands, of data points ...

Learn how DROP, REDUCE, LAMBDA, and STACK make Excel arrays update automatically, split text, and stack filtered results ...

Carol M. Kopp edits features on a wide range of subjects for Investopedia, including investing, personal finance, retirement planning, taxes, business management, and career development. Some active ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. David Kindness is a Certified Public Accountant ...

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For decades, America’s voter roll maintenance system has been running on fumes. It still relies on tools like the Postal Service’s National Change of Address database and the Social Security Death ...

Highview Power's prototype facility successfully used liquid air to store power (Credit: Highview Power) An overlooked technology for nearly 50 years, the first liquid air energy storage facility is ...