Probability of Failure in Excel

Question

Suppose I have probability of failure p = 0.2. Failure is defined as 0 and success is 1. How can I simulate this on an Excel cell (such that I can drag it down)? That is, a formula that yields 0 with a probability of 20% and 1 with 80%.

Thanks!

Answer 1

rand函数返回一个介于0和1之间的小数。如果它小于.2，则可以认为它是失败的。

=IF(RAND()<0.2,0,1)

Answer 2

RAND（）将给出一个介于0和1之间的随机数，因此您可以直接在IF中使用它：

=IF(RAND()<0.2,0,1)