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Tick sizes can be fixed (e.g., USD 0.0001) or vary according to the current price (common in European markets) with larger increments at higher prices. Heavily-traded stocks are given smaller tick sizes. An instrument price is always a rational number and the tick sizes determine the numbers that are permissible for a given instrument and exchange.
Their first calculator with a microprocessor is the Busicom 141-PF. Their entry based calculators, the Busicom LE-120A (Handy-LE) and LE-120S (Handy), [6] were the first to fit in a pocket and also the first calculators to use an LED display.
In 1863, English economist William Stanley Jevons proposed taking the geometric average of the price relative of period t and base period 0. [5] When used as an elementary aggregate, the Jevons index is considered a constant elasticity of substitution index since it allows for product substitution between time periods. [6]
In finance, the rule of 72, the rule of 70 [1] and the rule of 69.3 are methods for estimating an investment's doubling time. The rule number (e.g., 72) is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling.
The Mandatory Provident Fund (Chinese: 強制性公積金), often abbreviated as MPF (強積金), is a compulsory saving scheme (pension fund) for the retirement of residents in Hong Kong. Most employees and their employers are required to contribute monthly to mandatory provident fund schemes provided by approved private organisations ...
The Public Provident Fund (PPF) is a voluntary savings-tax-reduction social security instrument in India, [1] introduced by the National Savings Institute of the Ministry of Finance in 1968. The scheme's main objective is to mobilize small savings for social security during uncertain times by offering an investment with reasonable returns ...
From 1966 to 1986, the contribution rate was 3.6%. The rate was 1.8% for employees (and a like amount for their employers) and 3.6% in respect of self-employed earnings. Contribution rates began rising by 0.2% per year in 1987. By 1997, this had reached combined rates of 6% of pensionable earnings.
Under the standard assumption of neoclassical economics that goods and services are continuously divisible, the marginal rates of substitution will be the same regardless of the direction of exchange, and will correspond to the slope of an indifference curve (more precisely, to the slope multiplied by −1) passing through the consumption bundle in question, at that point: mathematically, it ...