Measurement shows that almost one-half of all market days are down days and slightly more are up days, but close enough to think of it as 50/50. Just as the probability of getting a long string of ...

Methodology: This interactive tool is based on rankings developed by the NRC. For a complete explanation of the methods the research council used, go to its site; registration may be required.

Finding π using random numbers and probability. This short demonstrates a Monte Carlo approach, showing how randomness and statistics can converge to an accurate estimate of pi through repeated trials ...

Try these interactive flashcards based on GCSE maths past papers. By working your way through the flashcards created by experts, you can prepare for your maths exams and revise commonly used ...