Application of Student t-test for evaluation of interlaboratory comparative tests results
The results of interlaboratory comparative tests typically represent a small sample size. Therefore, to evaluate the quality of test results of laboratories participating in interlaboratory comparative tests, it is proposed to use Student t-test, which connects three main characteristics of small sa...
| Main Authors: | , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Ural Research Institute of Metrology
2017-05-01
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| Series: | Standartnye Obrazcy |
| Subjects: | |
| Online Access: | https://www.rmjournal.ru/jour/article/view/82 |
| _version_ | 1818676125335814144 |
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| author | K. V. Shatalov A. V. Kirillova |
| author_facet | K. V. Shatalov A. V. Kirillova |
| author_sort | K. V. Shatalov |
| collection | DOAJ |
| description | The results of interlaboratory comparative tests typically represent a small sample size. Therefore, to evaluate the quality of test results of laboratories participating in interlaboratory comparative tests, it is proposed to use Student t-test, which connects three main characteristics of small sample: the width of the confidence interval, the corresponding confidence probability and sample size. The examples of interlaboratory comparative tests of diesel show, that the use Student test allows to more objectively evaluate the quality of tests results of laboratories, in particular to identify and assess the results outside the confidence interval of the certified value of the sample for inspection. The calculation of average values of Student statistic for the aggregate test results allows to evaluate the quality of the laboratory, to range them, to form a ranking of laboratories on an objective basis. |
| first_indexed | 2024-12-17T08:38:30Z |
| format | Article |
| id | doaj.art-0dc4c04be03348719ab76fb5f81d67fe |
| institution | Directory Open Access Journal |
| issn | 2077-1177 |
| language | Russian |
| last_indexed | 2024-12-17T08:38:30Z |
| publishDate | 2017-05-01 |
| publisher | Ural Research Institute of Metrology |
| record_format | Article |
| series | Standartnye Obrazcy |
| spelling | doaj.art-0dc4c04be03348719ab76fb5f81d67fe2022-12-21T21:56:24ZrusUral Research Institute of MetrologyStandartnye Obrazcy2077-11772017-05-0101424910.20915/2077-1177-2016-0-1-42-4982Application of Student t-test for evaluation of interlaboratory comparative tests resultsK. V. Shatalov0A. V. Kirillova1FAE «The 25th State Research Institute of Chemmotology of Ministry of Defense of the Russian Federation»FAE «The 25th State Research Institute of Chemmotology of Ministry of Defense of the Russian Federation»The results of interlaboratory comparative tests typically represent a small sample size. Therefore, to evaluate the quality of test results of laboratories participating in interlaboratory comparative tests, it is proposed to use Student t-test, which connects three main characteristics of small sample: the width of the confidence interval, the corresponding confidence probability and sample size. The examples of interlaboratory comparative tests of diesel show, that the use Student test allows to more objectively evaluate the quality of tests results of laboratories, in particular to identify and assess the results outside the confidence interval of the certified value of the sample for inspection. The calculation of average values of Student statistic for the aggregate test results allows to evaluate the quality of the laboratory, to range them, to form a ranking of laboratories on an objective basis.https://www.rmjournal.ru/jour/article/view/82межлабораторные сравнительные испытанияиспытательные лабораторииоценка результата испытанийоценка качества работы лабораторииаттестованное значениедоверительный интервалкритерий стьюдентаz-индексinterlaboratory comparative teststesting laboratoriesevaluation of tests resultquality assessment of laboratory workflowcertified valueconfidence intervalstudent t-testz-index |
| spellingShingle | K. V. Shatalov A. V. Kirillova Application of Student t-test for evaluation of interlaboratory comparative tests results Standartnye Obrazcy межлабораторные сравнительные испытания испытательные лаборатории оценка результата испытаний оценка качества работы лаборатории аттестованное значение доверительный интервал критерий стьюдента z-индекс interlaboratory comparative tests testing laboratories evaluation of tests result quality assessment of laboratory workflow certified value confidence interval student t-test z-index |
| title | Application of Student t-test for evaluation of interlaboratory comparative tests results |
| title_full | Application of Student t-test for evaluation of interlaboratory comparative tests results |
| title_fullStr | Application of Student t-test for evaluation of interlaboratory comparative tests results |
| title_full_unstemmed | Application of Student t-test for evaluation of interlaboratory comparative tests results |
| title_short | Application of Student t-test for evaluation of interlaboratory comparative tests results |
| title_sort | application of student t test for evaluation of interlaboratory comparative tests results |
| topic | межлабораторные сравнительные испытания испытательные лаборатории оценка результата испытаний оценка качества работы лаборатории аттестованное значение доверительный интервал критерий стьюдента z-индекс interlaboratory comparative tests testing laboratories evaluation of tests result quality assessment of laboratory workflow certified value confidence interval student t-test z-index |
| url | https://www.rmjournal.ru/jour/article/view/82 |
| work_keys_str_mv | AT kvshatalov applicationofstudentttestforevaluationofinterlaboratorycomparativetestsresults AT avkirillova applicationofstudentttestforevaluationofinterlaboratorycomparativetestsresults |