expected value

the value of a random variable or one of its functions as derived by mathematical calculation rather than observation. It is symbolized by E(x), with x varying according to the specific item of interest that is being calculated. Usually, the expected value is a mean or weighted average.

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Psychology term of the day

September 7th 2024

time-limited day treatment

an outpatient all-day therapeutic community approach used with clients diagnosed with personality disorders that capitalizes on the positive attributes of the clients as a group. [developed by Canadian psychologist William E. Piper (1945– )]