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Fig. 1. Two examples of inadequate representation of data when applying mode criteria. Bottom arrow (Mode) indicate the range of acceptability using mode criteria. Upper three arrows (GSD) indicate the range when applying geometric standard deviation (GSD) criteria. In both examples, inadequate representation of the data distribution resulted in the exclusion of eligible responses of their acceptability. (A) An example of skewed distribution where mode cannot represent the central tendency while GSD demonstrates the central tendency of the data set. (B) An example where mode value is determined by the difference of just one participant. The use of GSD criteria correctly represents the range where most responses are included.
Lab Med Qual Assur 2022;44:48~54
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