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Example of the optimal Kelly betting fraction, versus expected return of other fractional bets. In probability theory, the Kelly criterion (or Kelly strategy or Kelly bet) is a formula for sizing a sequence of bets by maximizing the long-term expected value of the logarithm of wealth, which is equivalent to maximizing the long-term expected geometric growth rate.
An example of this effect was seen during economic crises such as the 2008 financial crash, when panic induced sell-offs heavily impacted market stability. The period prior to the Great Recession had a "decade-long expansion in US housing market activity peaked in 2006 [4]," which came to a halt in 2007. As the trends prior to 2008 hinted at ...
The problem is that a few losses (or even just one loss) can fully wipe out the gains made in weeks or months from winning trades, causing huge frustration. Using Win/Loss Ratio in Trading Skip to ...
In cognitive science and behavioral economics, loss aversion refers to a cognitive bias in which the same situation is perceived as worse if it is framed as a loss, rather than a gain. [ 1 ] [ 2 ] It should not be confused with risk aversion , which describes the rational behavior of valuing an uncertain outcome at less than its expected value .
In this case, expected return is a measure of the relative balance of win or loss weighted by their chances of occurring. For example, if a fair die is thrown and numbers 1 and 2 win $1, but 3-6 lose $0.5, then the expected gain per throw is
An example of real GDP (y) plotted against time (x).Often time is denoted as t instead of x. The IS curve moves to the right if spending plans at any potential interest rate go up, causing the new equilibrium to have higher interest rates (i) and expansion in the "real" economy (real GDP, or Y).
For example, a 4-firm concentration ratio measures the total market share of the four largest firms in an industry. In order to calculate the N -firm concentration ratio, one usually uses sales revenue to calculate market share, however, concentration ratios based on other measures such as production capacity may also be used.
The DuPont analysis breaks down ROE (that is, the returns that investors receive from a single dollar of equity) into three distinct elements. This analysis enables the manager or analyst to understand the source of superior (or inferior) return by comparison with companies in similar industries (or between industries).