[OC] For small sample sizes, a coin can appear to 'favor' tails after a run of heads. This bias disappears as the sample increases. But how long it takes depends on the length of the run of heads. Simulation results for runs of 3, 5, 10, and 15 heads in a row.
from /r/dataisbeautiful
[OC]对于小规模的样本来说，一枚硬币在出现正面后会显得 "偏爱 "反面。随着样本的增加，这种偏见也会消失。但这需要多长时间取决于正面的运行长度。连续3、5、10和15个正面的模拟结果。