prob140.Table.ev

Table.ev()

Finds expected value of distribution

Returns:

float

Expected value

Examples

>>> dist = Table().values([1, 2, 4]).probability([0.5, 0.4, 0.1])
>>> dist.ev()
1.7
>>> 1 * 0.5 + 2 * 0.4 + 4 * 0.1
1.7