- / 2.7 One of the many wonderful things about studying statistics is that graduate programs in statistics often pay their graduate students, which means that many graduate students in statistics are able to attend graduate school tuition free with an assistantship or fellowship. In 2009, there were 82 US statistics or biostatistics doctoral programs for which enrollment data were available.? The dataset Statistics Grad Schools lists all these schools together with the total enrollment of full-time graduate students in each program in 2009. Click here for the dataset StatisticsPhD associated with this question. If using StatKey, the data needed is preloaded as Statistics Grad Schools in the drop-down menu in the upper left corner. Click here to access StatKey. Full list of the 82 Group IV departments was obtained at http://www.ams.org/profession/data/annual-survey/group_iv. Data on enrollment obtained primarily from Assistantships and Graduate Fellowships in the Mathematical Sciences, 2009, American Mathematical Society. The list does not include combined departments of mathematics and statistics and does not include departments that did not reply to the AMS survey. (a) A random sample of 10 of the 82 enrollment values is given in the table below. Give the notation for the sample mean. University Department Enrollment Case Western Reserve University Statistics 11 University of South Carolina Biostatistics 45 Harvard University Statistics 67 University of California - Riverside Statistics 54 Medical University of South Carolina | Biostatistics 46 University of Nebraska Statistics 44 New York University Statistics 6 Columbia University Statistics 196 University of lowa Biostatistics 35 Baylor University Statistics 26 DELL:: P1 :: P :: D :: P1 :: P2 The statistic of interest is eTextbook and Media Hint (b) Compute the sample mean. Enter the exact answer. Sample mean = i eTextbook and Media Hint