Imagine a hypothetical baseball player. Call him Alex. He fails a drug test that is known to be 95 percent accurate. How likely is it that he is really guilty? If you said 95 percent, you’re wrong.

Test yourself on math's most famous constant with this pi quiz. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. On March 14 mathematicians ...

See how you stack up against school-age test-takers. Warning: This graphic requires JavaScript. Please enable JavaScript for the best experience.

Mariah is a Berlin-based writer with six years of experience in writing, localizing and SEO-optimizing short- and long-form content across multiple niches, including higher education, digital ...

Test results show a tale of two school systems across the Lehigh Valley, with suburban districts Southern Lehigh and Parkland ranking in the top 10% statewide and the large urban districts of ...

Test your math know-how with sample questions from the new Accuplacer. Related Article I graduated from college nearly 25 years ago. Wondering if I’d be considered college-ready now, I arranged at a ...