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  2. Bootstrapping (statistics) - Wikipedia

    en.wikipedia.org/wiki/Bootstrapping_(statistics)

    Bootstrapping is any test or metric that uses random sampling with replacement (e.g. mimicking the sampling process), and falls under the broader class of resampling methods. Bootstrapping assigns measures of accuracy ( bias, variance, confidence intervals, prediction error, etc.) to sample estimates.

  3. Academic grading in the United States - Wikipedia

    en.wikipedia.org/wiki/Academic_grading_in_the...

    The top grade, A, is given here for performance that exceeds the mean by more than 1.5 standard deviations, a B for performance between 0.5 and 1.5 standard deviations above the mean, and so on. Regardless of the absolute performance of the students, the best score in the group receives a top grade and the worst score receives a failing grade.

  4. Grading in education - Wikipedia

    en.wikipedia.org/wiki/Grading_in_education

    Papua New Guinea. v. t. e. Grading in education is the process of applying standardized measurements for varying levels of achievements in a course. Grades can be assigned as letters (usually A to F), as a range (for example, 1 to 6), as a percentage, or as a number out of a possible total (often out of 100). [1]

  5. Bootstrapping (compilers) - Wikipedia

    en.wikipedia.org/wiki/Bootstrapping_(compilers)

    Bootstrapping (compilers) In computer science, bootstrapping is the technique for producing a self-compiling compiler – that is, a compiler (or assembler) written in the source programming language that it intends to compile. An initial core version of the compiler (the bootstrap compiler) is generated in a different language (which could be ...

  6. Norm-referenced test - Wikipedia

    en.wikipedia.org/wiki/Norm-referenced_test

    A norm-referenced test ( NRT) is a type of test, assessment, or evaluation which yields an estimate of the position of the tested individual in a predefined population, with respect to the trait being measured. Assigning scores on such tests may be described as relative grading, marking on a curve ( BrE) or grading on a curve ( AmE, CanE) (also ...

  7. NRS social grade - Wikipedia

    en.wikipedia.org/wiki/NRS_social_grade

    NRS social grade. The NRS social grades are a system of demographic classification used in the United Kingdom. They were originally developed by the National Readership Survey (NRS) to classify readers, but have since been used by many other organisations for wider applications and have become a standard for market research. [1]

  8. Bortle scale - Wikipedia

    en.wikipedia.org/wiki/Bortle_scale

    Bortle scale. The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky 's brightness of a particular location. It quantifies the astronomical observability of celestial objects and the interference caused by light pollution.

  9. Academic grading in South Africa - Wikipedia

    en.wikipedia.org/wiki/Academic_grading_in_South...

    Code 2 (E): 30% - 39% Code 1 (F): 0% - 29% The OBE system, when in its experimental stages, originally used a scale from 1 - 4 (a pass being a 3 and a '1st class pass' being above 70%), but this system was considered far too coarse and replaced by a scale from 1 to 7.