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  2. Standard score - Wikipedia

    en.wikipedia.org/wiki/Standard_score

    Comparison of the various grading methods in a normal distribution, including: standard deviations, cumulative percentages, percentile equivalents, z-scores, T-scores. In statistics, the standard score is the number of standard deviations by which the value of a raw score (i.e., an observed value or data point) is above or below the mean value of what is being observed or measured.

  3. Stanine - Wikipedia

    en.wikipedia.org/wiki/Stanine

    Stanine (STAndard NINE) is a method of scaling test scores on a nine-point standard scale with a mean of five and a standard deviation of two.. Some web sources attribute stanines to the U.S. Army Air Forces during World War II.

  4. List of standardized tests in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_standardized_tests...

    National Assessment of Educational Progress (NAEP); State achievement tests are standardized tests.These may be required in American public schools for the schools to receive federal funding, according to the US Public Law 107-110 originally passed as Elementary and Secondary Education Act of 1965, and currently authorized as Every Student Succeeds Act in 2015.

  5. 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. [17] 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.

  6. Peabody Individual Achievement Test - Wikipedia

    en.wikipedia.org/wiki/Peabody_Individual...

    The PIAT-R/NU test is accompanied by a manual which provides grade and age equivalent scores. The modern version also comes with a software program called PIAT-R ASSIST which processes the raw scores and produces various reports, including age and grade equivalents, standard scores by age and grade, percentile ranks, and derived scores for ...

  7. Wide Range Achievement Test - Wikipedia

    en.wikipedia.org/wiki/Wide_Range_Achievement_Test

    Norms provided for the 1978 edition include standard scores with a mean of 100 and a standard deviation of 15, percentile scores, and grade levels. The standard scores are scaled based on the norm group; the grade levels are arbitrarily assigned and can be interpreted only as rough references to achievement level. Only standard scores should be ...

  8. Is your camera ticket a fake? Here’s how to tell - AOL

    www.aol.com/news/camera-ticket-fake-tell...

    Red light camera tickets: Not liable to ID the driver; some are fishing expeditions. Tech expert Kurt “CyberGuy" Knutsson helps you fight back against tricky fake tickets.

  9. Normal curve equivalent - Wikipedia

    en.wikipedia.org/wiki/Normal_curve_equivalent

    The reason for the choice of the number 21.06 is to bring about the following result: If the scores are normally distributed (i.e. they follow the "bell-shaped curve") then the normal equivalent score is 99 if the percentile rank of the raw score is 99; the normal equivalent score is 50 if the percentile rank of the raw score is 50;