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  2. Bloom's 2 sigma problem - Wikipedia

    en.wikipedia.org/wiki/Bloom's_2_Sigma_Problem

    Mastery learning is an educational philosophy first proposed by Bloom in 1968 [8] based on the premise that students must achieve a level of mastery (e.g., 90% on a knowledge test) in prerequisite knowledge before moving forward to learn subsequent information on a topic. [9]

  3. Two-sample hypothesis testing - Wikipedia

    en.wikipedia.org/wiki/Two-sample_hypothesis_testing

    In statistical hypothesis testing, a two-sample test is a test performed on the data of two random samples, each independently obtained from a different given population. The purpose of the test is to determine whether the difference between these two populations is statistically significant .

  4. Shahtoosh - Wikipedia

    en.wikipedia.org/wiki/Shahtoosh

    Despite some successful arrests of illegal trafficking rings, a large number of "petty criminals" get away with it, as it is usually claimed to be pashmina or similar legal fabrics. A clear clarification that can be used in court is only obtained after a laboratory examination ( DNA test , [ 12 ] measurement under a light microscope or a ...

  5. Pashmina (material) - Wikipedia

    en.wikipedia.org/wiki/Pashmina_(material)

    to full- sized shawl measuring 40 in x 80 in (100 cm x 200 cm), large shawls measuring 45 in x 90 in (114 cm x 228 cm), and XL shawls measuring 54 in x 108 in (137 cm x 274 cm). [20] A craze for pashmina shawls, known as shahmina in Kashmir, in the mid-1990s resulted in high demand for the raw material, so demand exceeded supply. When these ...

  6. Sampling distribution - Wikipedia

    en.wikipedia.org/wiki/Sampling_distribution

    In statistics, a sampling distribution or finite-sample distribution is the probability distribution of a given random-sample-based statistic.For an arbitrarily large number of samples where each sample, involving multiple observations (data points), is separately used to compute one value of a statistic (for example, the sample mean or sample variance) per sample, the sampling distribution is ...

  7. Changthangi - Wikipedia

    en.wikipedia.org/wiki/Changthangi

    Both sexes are horned; the horns are large and twisted, and may reach a length of 55 cm. [3]: 369 The ears are small and upright. [8]: 81 The coat consists of an outer coat of long hair, and a thick undercoat of fine pashmina; [8]: 81 it is commonly white, but can also be black, brown or grey. The skin is white or pale brown.

  8. Kashmir shawl - Wikipedia

    en.wikipedia.org/wiki/Kashmir_shawl

    The principal aspects of the shawl are its distinctive Kashmiri weaving technique and fine wool. [1] However, the Kashmir shawl's definition has varied in time and place, depending on various factors such as the material used and its cost, the method of construction, the intended use, and the status of the wearer. [1]

  9. Classical test theory - Wikipedia

    en.wikipedia.org/wiki/Classical_test_theory

    Classical test theory assumes that each person has a true score,T, that would be obtained if there were no errors in measurement. A person's true score is defined as the expected number-correct score over an infinite number of independent administrations of the test.