What is the benefit of using a Randomizer in a survey?

Using a Randomizer in a survey is particularly beneficial because it helps avoid biases in question order. When respondents answer questions in a fixed sequence, their answers may be influenced by the context provided by preceding questions. This could lead to order effects where later questions are skewed based on information or emotions evoked by earlier ones. By employing a Randomizer, each respondent can receive the questions in a different order, thereby mitigating this potential bias. This strategy enhances the validity of the data collected, as it reflects more accurate and independent responses.

The other options do not accurately capture the primary purpose of a Randomizer. Uniformity in question presentation is not directly related to the use of a Randomizer since the focus is on variability rather than consistency. A Randomizer does not select random respondents; instead, it randomizes the order of items presented to a given respondent. While reducing survey length could be a consideration in survey design, it is not a function served by the Randomizer, which is mainly concerned with question order rather than the overall length of the survey.