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  2. Comparison of Texas Instruments graphing calculators

    en.wikipedia.org/wiki/Comparison_of_Texas...

    Calculator CPU RAM Display Size Physical Size (inches) Contains CAS Year Released Initial MSRP (nominal US$) [1] Use on College Board Standardized Tests [2] Use on ACT Standardized Tests [3] TI-73, TI-73 Explorer: Zilog Z80 @ 6 MHz: 25 KB of RAM, 512 KB of Flash ROM: 96×64 pixels 16×8 characters 7.3 × 3.5 × 1.0 [4] No 1998/2003 95 (TI-73 ...

  3. Relative change - Wikipedia

    en.wikipedia.org/wiki/Relative_change

    In any quantitative science, the terms relative change and relative difference are used to compare two quantities while taking into account the "sizes" of the things being compared, i.e. dividing by a standard or reference or starting value. [1] The comparison is expressed as a ratio and is a unitless number.

  4. Comparison of HP graphing calculators - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_HP_graphing...

    A graphing calculator is a class of hand-held calculator that is capable of plotting graphs and solving complex functions. While there are several companies that manufacture models of graphing calculators, Hewlett-Packard is a major manufacturer.

  5. Difference engine - Wikipedia

    en.wikipedia.org/wiki/Difference_engine

    To tabulate polynomials of degree n, one needs sufficient storage to hold n numbers. Babbage's difference engine No. 2, finally built in 1991, can hold 8 numbers of 31 decimal digits each and can thus tabulate 7th degree polynomials to that precision. The best machines from Scheutz could store 4 numbers with 15 digits each. [45]

  6. Paired difference test - Wikipedia

    en.wikipedia.org/wiki/Paired_difference_test

    A paired difference test, better known as a paired comparison, is a type of location test that is used when comparing two sets of paired measurements to assess whether their population means differ. A paired difference test is designed for situations where there is dependence between pairs of measurements (in which case a test designed for ...

  7. Likelihood-ratio test - Wikipedia

    en.wikipedia.org/wiki/Likelihood-ratio_test

    In statistics, the likelihood-ratio test is a hypothesis test that involves comparing the goodness of fit of two competing statistical models, typically one found by maximization over the entire parameter space and another found after imposing some constraint, based on the ratio of their likelihoods.

  8. HP calculators - Wikipedia

    en.wikipedia.org/wiki/HP_calculators

    HP's first scientific calculator, HP-35. With this in mind, HP built the HP 9100 desktop scientific calculator. This was a full-featured calculator that included not only standard "adding machine" functions but also powerful capabilities to handle floating-point numbers, trigonometric functions, logarithms, exponentiation, and square roots.

  9. Pie chart - Wikipedia

    en.wikipedia.org/wiki/Pie_chart

    A spie chart comparing number of students with student costs across four different schools. A variant of the polar area chart is the spie chart, designed by Dror Feitelson. [21] The design superimposes a normal pie chart with a modified polar area chart to permit the comparison of two sets of related data.