File:Standard_deviation_diagram_micro.svg · Wikimedia Commons · See Wikimedia Commons
ค่าคาดหมาย
Also known as mathematical expectation, first moment, expected value, expectation value
long-run average value of a random variable
AI overview
An expectation is the long-run average value you'd get if you repeated a random experiment many times and calculated the mean of all the outcomes. It matters because it tells you what to expect "on average" from uncertain situations, making it useful for decision-making and predicting typical outcomes.
AI-generated from the Wikipedia summary — may contain errors.