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The HP-12C is a financial calculator made by Hewlett-Packard (HP) and its successor HP Inc. as part of the HP Voyager series, introduced in 1981. It is HP's longest and best-selling product and is considered the de facto standard among financial professionals.
Backside of the above HP-12C with some use cases with the respective keys to be pressed for frequent tasks from the field of finance A financial calculator or business calculator is an electronic calculator that performs financial functions commonly needed in business and commerce communities [ 1 ] (simple interest, compound interest, cash flow ...
The weighted arithmetic mean is similar to an ordinary arithmetic mean (the most common type of average), except that instead of each of the data points contributing equally to the final average, some data points contribute more than others.
A weighted average, or weighted mean, is an average in which some data points count more heavily than others in that they are given more weight in the calculation. [6] For example, the arithmetic mean of 3 {\displaystyle 3} and 5 {\displaystyle 5} is 3 + 5 2 = 4 {\displaystyle {\frac {3+5}{2}}=4} , or equivalently 3 ⋅ 1 2 + 5 ⋅ 1 2 = 4 ...
The HP-12C is a popular financial calculator. It was such a successful model that Hewlett-Packard redesigned it from scratch, [1] added several new functions, and introduced it as the HP 12c Platinum in 2003 as well as the HP 12c Prestige. Over the course of years, several anniversary editions of the calculator were produced as well.
For example, if the yearly percentage rate was 6% (i.e. 0.06), then r would be / or 0.5% (i.e. 0.005). N - the number of monthly payments, called the loan's term, and; P - the amount borrowed, known as the loan's principal. In the standardized calculations used in the United States, c is given by the formula: [4]
The Marshall-Edgeworth index, credited to Marshall (1887) and Edgeworth (1925), [11] is a weighted relative of current period to base period sets of prices. This index uses the arithmetic average of the current and based period quantities for weighting. It is considered a pseudo-superlative formula and is symmetric. [12]
HP-10s: 2007 A scientific calculator with more than 240 built-in functions, with 2 lines × 10 digits LCD. HP-12C: 1981 The finance-centric programmable calculator from the Voyager series introduced in the 1980s. The longest running product in the HP calculator line, it remains in production. Various models exist, the latest in 2008. HP-14B: 1988