#1 expectation n. [outlook, prospect] belief about (or mental picture of) the future. wn
#2 expectation n. [anticipation] anticipating with confidence of fulfillment. wn
#3 expectation n. the feeling that something is about to happen. wn
#4 expectation n. [arithmetic mean, first moment, expected value] the sum of the values of a random variable divided by the number of values. wn
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