Tutorial code for performing PCA (with mathematical explanation) on breast cancer features computed from digitized images of fine needle aspirate (FNA) of a breast mass. Center the data, calculate ...

Excel was founded by Jeff Schwartz, one of the top agents in the NBA, and has grown over the last two decades. It now has marketing and executive search and advisory arms, as well as player ...

One reason people hesitate with LAMBDA is the assumption that it requires learning something entirely new. It doesn't. Every ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Dr. JeFreda R. Brown is a financial consultant, ...

The @ symbol can also appear in regular formulas outside of tables when Excel thinks you're trying to reference a single value from a range. If you see it pop up unexpectedly, it usually means Excel ...

You can create a release to package software, along with release notes and links to binary files, for other people to use. Learn more about releases in our docs.