Related Experiment Video

Updated: Jan 19, 2026

Expected Value
01:15

Expected Value

7.4K

Near peer teaching in general practice: option or expectation?

Hugh Alberti1, Joe Rosenthal2, Liza Kirtchuk3

  • 1School of Medical Education, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.

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Expected Value01:15

Expected Value

The expected value is known as the "long-term" average or mean. This means that over the long term of experimenting over and over, you would expect this average. The expected average is represented by the symbol μ. It is calculated as follows:
7.4K
Expected Income, Expected Utility, and Risk Aversion II01:19

Expected Income, Expected Utility, and Risk Aversion II

John is evaluating a job offer from a company where his income will be uncertain. If the company performs well, John will earn an annual income of  $81,000; otherwise, he will earn $49,000. It is assumed that either outcome has an equal chance, assigning a probability of 0.5 to each. This results in an expected income of $65,000. His decision-making is affected by the diminishing marginal utility of income. John evaluates his options based on their utility. Expected utility accounts...
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Influence of Parents and Peers on Identity01:23

Influence of Parents and Peers on Identity

Adolescence is a pivotal period of identity formation, during which individuals begin to answer questions central to their sense of self, such as "Who am I?" and "Who do I hope to become?" Both parents and peers play critical roles in guiding adolescents through this complex developmental phase.
Parental Influence on Identity Development
Parents serve as primary guides and managers in an adolescent's life, offering support instrumental in decision-making and personal growth....
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Determination of Expected Frequency01:08

Determination of Expected Frequency

Suppose one wants to test independence between the two variables of a contingency table. The values in the table constitute the observed frequencies of the dataset. But how does one determine the expected frequency of the dataset? One of the important assumptions is that the two variables are independent, which means the variables do not influence each other. For independent variables, the statistical probability of any event involving both variables is calculated by multiplying the individual...
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Expected Income, Expected Utility, and Risk Aversion I01:08

Expected Income, Expected Utility, and Risk Aversion I

Consider a hypothetical example where John is evaluating a job offer from a company. If the company performs well, John will earn an annual income of  $81,000; if it performs poorly, he will earn $49,000. Each outcome is equally likely, with a probability of 0.5. These two outcomes are mutually exclusive, meaning only one can occur and their probabilities sum to 1. The amounts of $81,000 and $49,000 represent the payoffs associated with each outcome.John's expected income is the average...
275
Expected Return01:27

Expected Return

Expected returns represent an investment's predicted profit or loss over a designated timeframe. These projections are based on historical performance, market trends, and statistical analysis, making them essential for investment planning and evaluating risk. Unlike actual returns, which reflect historical outcomes, expected returns offer a forward-looking estimate.
Expected returns help investors make informed decisions by providing insights into potential future performance. However,...
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