Which of the following is an example of random error in measurement?
A) Consistent use of a tuning fork pitched too high
B) Inadvertent deletion of one question from the questionnaire sent to all subjects in a study
C) Occasional discussion of questions with some subjects during completion of the measurement tool
D) Use of a mismarked tape measure to determine infant head circumference

Question

Quizplus · Accepted Answer

Random error can occur with variations in the administration of the measurement procedure, if subjects accidentally mark the wrong answer, or data are entered incorrectly into the computer in preparation for data analysis.
Although the measurements would be off, they would all be in the same direction.
Since all subjects received that same questionnaire, this would not represent random error.
Even though mismarked, the tape measure was used for all measurements and would not be random error.

Which of the Following Is an Example of Random Error