CURRICULUM

Statistics: Four Difficulties, 4000 Levels

Statistics has four difficulties with 1000 levels each and ten questions per level; explain the result before adding speed. Data statistics levels ask for a measure or probability; define the denominator before calculating.

数据统计基础闯关Data Statistics Basics1000 关数据概率入门闯关Data Probability Intro1000 关数据统计进阶闯关Data Statistics Advanced1000 关数据统计挑战闯关Data Statistics Challenge1000 关

How it works

  1. Start at the basic difficulty.
  2. Ten questions per level; clear one to unlock the next.
  3. Review at 1/3/7/14/30 days.

FAQ

Which difficulty?

Start at basic and move up when accuracy stays above 80%.

How many levels each?

1000.