Which of the following methods can reduce statistical variance?

Name: Which of the following methods can reduce statistical variance?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Random assignment can reduce variance by ensuring that the sample is representative of the population. Sound methodology can reduce variance by minimizing measurement error and increasing the reliability of data collection. Therefore, the combination of random assignment and sound methodology can have an even greater effect on reducing statistical variance.

Which of the Following Methods Can Reduce Statistical Variance