JSCalc

This problem isn’t one that calls for the binomial distribution. You’re pulling five cards and would like to calculate probability of getting exactly three hearts. … Read More

Imagine you’re running a call center. On average, four calls per minute come through during your shift. The question haunting your shift is whether you … Read More

Right when you figure you’ve done enough for an hour, the phone rings. You look up at the clock, and you wonder whether it’s just … Read More

The way we think about the anxiety of waiting for something special is all math. This includes things like getting your first yes from an … Read More

Let’s say you’re playing basketball and taking free throws. Until you have made five baskets, you’ll continue to shoot. How many shots do you think … Read More

From that perspective, you’ll likely have some familiarity with variance, something you encountered in a stats course as a confusing obstacle to overcome. Sure, the … Read More

What about expected value? That’s where we measure how much headline prize over- or underpays compared with real-world average. Yes, we know that headline number … Read More

There are four kings in a standard deck of cards, so probability of pulling one out is four in fifty-two. There are four queens in … Read More

How likely is it that I’ll land on my target? What about landing on my target multiple times in a row? If events are independent, … Read More