Expectation value
Expectation value is the average value of a measurement, calculated from the possible measurements and probabilities (for a discrete system). I provide a classical example and two quantum examples.
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RMS Deviation in Quantum Systems
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Expectation values of operators
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Probability in bra-ket Example Calculation
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Expectation value of Hermitian operators
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Calculating Commutators
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Example: Normalizing a ket state
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Expectation values in quantum mechanics
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Basic approach of calculating probability in bra-ket notation
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Angular momentum operators and their algebra
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Expectation value of Position
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Wavefunction Properties, Normalization, and Expectation Values
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Projection Operators and Measurement
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Understanding Quantum Mechanics #5: Decoherence
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Normalizing Spin-1/2 Ket States
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