Editing Standard score (section)

==T-score==
{{distinguish-redirect|T-score|t-statistic{{!}}''t''-statistic}}
In educational assessment, '''T-score''' is a standard score Z shifted and scaled to have a mean of 50 and a standard deviation of 10.<ref>{{cite book|author1=John Salvia|author2=James Ysseldyke|author3=Sara Witmer|title=Assessment: In Special and Inclusive Education|url=https://books.google.com/books?id=57jdRoC4hCoC&pg=PA43|date=29 January 2009|publisher=Cengage Learning|isbn=978-0-547-13437-6|pages=43–}}</ref><ref>{{cite book|author1=Edward S. Neukrug|author2=R. Charles Fawcett|title=Essentials of Testing and Assessment: A Practical Guide for Counselors, Social Workers, and Psychologists|url=https://books.google.com/books?id=dejKAgAAQBAJ&pg=PA133|date=1 January 2014|publisher=Cengage Learning|isbn=978-1-305-16183-2|pages=133–}}</ref><ref>{{cite book|author=Randy W. Kamphaus|title=Clinical Assessment of Child and Adolescent Intelligence|url=https://books.google.com/books?id=sMSWbI23RMUC&pg=PA123|date=16 August 2005|publisher=Springer|isbn=978-0-387-26299-4|pages=123–}}</ref> It is also known as ''[[:ja:偏差値|hensachi]]'' in Japanese, where the concept is much more widely known and used in the context of high school and university admissions.<ref>{{Cite journal |last=Goodman |first=Roger |last2=Oka |first2=Chinami |date=2018-09-03 |title=The invention, gaming, and persistence of the hensachi (‘standardised rank score’) in Japanese education |url=https://www.tandfonline.com/doi/full/10.1080/03054985.2018.1492375 |journal=Oxford Review of Education |language=en |volume=44 |issue=5 |pages=581–598 |doi=10.1080/03054985.2018.1492375 |issn=0305-4985 |jstor=26836035|url-access=subscription }}</ref>

In bone density measurements, the T-score is the standard score of the measurement compared to the population of healthy 30-year-old adults, and has the usual mean of 0 and standard deviation of 1.<ref>
{{cite web|title=Bone Mass Measurement: What the Numbers Mean|url=https://www.niams.nih.gov/Health_Info/Bone/Bone_Health/bone_mass_measure.asp#b|website=NIH Osteoporosis and Related Bone Diseases National Resource Center|publisher=National Institute of Health|access-date=5 August 2017}}</ref>