Five big personality tests are standardized so that the average score is 100 for the entire group of people who take the test each year. However, if we selected a group of 40 people who took the test and computed their average test score, we probably would not get 100. What statistical concept explains the difference between the  group mean  and the mean for the entire group?   Lütfen birini seçin: A. descriptive error B. statistical error C. sampling error D. inferential error

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