## Establishing Quality Control and Normal Ranges in the Clinical LaboratoryThis encyclopedia considers both the professional ethics of science and technology, and the social, ethical, and political issues raised by science and technology. |

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abnormal accuracy and precision accurate and precise affect amount approximately arithmetic mean averages-of-normals charts cent points class interval clinical laboratories computing the mean confidence limits consider control charts cumulative described deviation of individual deviation of normals distribution of patients distributions of means error standard deviations estimating normal ranges example female hemoglobin frequency distributions Gaussian distribution given in Table graph paper group of normal group of tests illustrated individual tests instance laboratory data laboratory personnel laboratory tests mathematical mean and standard measurement scale milligram mistakes number of significant number of tests obtained physicians population mean probability paper proficiency testing programs quality control programs real quality control reference specimen tests representing tests sample significant figures similar specimens are tested square root stable standard error statistical methods straight line sum of squares tally marks technologists tests for glucose tests of normal tests of patients tests of reference textbook ranges variation