What should you use to minimize the effect of one or more extreme values of an average score?

To minimize the effect of extreme values (outliers) on an average score, you can use the median instead of the mean, as the median is less sensitive to extreme values. Additionally, applying robust statistical techniques, such as trimming or winsorizing the data, can help mitigate their influence. Using interquartile range to assess variability can also provide a clearer picture of the central tendency without being distorted by outliers.