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Which of the following is an example of a statistic? (O a.) Average number of all high school graduates who will attend college ® O©O b)) 25 random students are asked how much they spent on books O c¢) Summary value of a population (O d.) Standard deviation of tuition costs for all private universities b.) Correct. A sample is a subset of the entire group of interest. A statistic is something that comes from a sample. Since these 25 students are only a subset of all in the population, this is an example of a statistic from a sample.