Which category is genuinely the hardest

Everybody has a category they believe is the hardest. The answers from real rounds have their own opinion: here is how often each category is answered correctly, how long people take, and how often the clock runs out.

As of . Recomputed every hour from the answers given in multiplayer rounds.

What stands out

The hardest category is Science: 49 % of 37 answers were correct. The easiest is History at 66 %. That gap of 18 percentage points is about 2 questions in a ten-question round.

People think longest on Science (8.6 s on average), and the clock runs out most often on Science (0 % of answers). The hardest category also being the slowest is what you would expect: people who do not know, think.

And the labels? Questions rated “easy” are answered correctly 61 % of the time, “hard” ones 54 %. So the order holds, even if the gap is smaller than the words suggest.

Every category, hardest first

  1. 49 %

    37 answers to 23 questions · avg 8.6 s · 0 % timeouts

  2. 56 %

    149 answers to 74 questions · avg 5.4 s · 0 % timeouts

  3. 66 %

    83 answers to 23 questions · avg 4.3 s · 0 % timeouts

Do the labels hold?

Every pool question carries a label its author assigned when writing it. Here is what the answers made of that.

  • easy90 answers
    61 %
  • medium121 answers
    55 %
  • hard67 answers
    54 %

How this is computed

Every answer to a multiple-choice question from the site’s own pool in a multiplayer round counts; community quizzes and estimation questions are excluded. A category appears from 12 answers. Timeouts count as wrong. Answer time is the mean seconds to answer across all of the category’s answers, with a timeout counted at the full question time.

Categories with few questions swing more: a single very hard question that gets played a lot pulls a small category’s average down noticeably. That is why the question count is shown next to each one.

Try them yourself

Five questions, the same five for everyone, new every day. No account, two minutes.