Mentoring shapes minds and futures. But here’s the truth I’ve learned after more than three decades on this planet, including a decade in the corporate world: not all mentoring works. Over time, I’ve come to see mentoring in two distinct shades: Col...

Dear Readers, NULL in data is like a weed, it can mess up your analysis and calculations, and ultimately bleed the value out of your analytics work. In this article, we’ll dive into what NULL is, why it exists, when it appears, and how to deal with ...