Which of the Following Steps Should Be Taken When an Outlier

Multiple Choice

Which of the following steps should be taken when an outlier value is obtained during data collection for the determination of reference intervals?

A) The outlier value should be dropped without further consideration.
B) The outlier value indicates a problem with the sample group; it must be redefined and the process started over.
C) The outlier value indicates a problem with the new procedure being implemented; it must be corrected before the samples are reanalyzed.
D) The outlier value should be further evaluated to determine whether it should be included with or deleted from data used to determine the reference range.