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ar -ig Math Scores by Region Region Score Region Score 270 26 294 4 5 7 8 9 10 11 12 13 14 15 16 17 1127227 18 19 20 23 24 25 Print 283 278 276 270 287 288 282 281 278 274 289 281 287 282 287 278 273 285 290 27 28 29 30 31 32 299 33 34 35 36 37 38 39 40 41 42 43 44 45 46 277 47 295 263 285 48 49 50 285 276 294 292 271 284 284 294 288 278 285 290 277 280 289 274 287 286 292 286 289 271 287 286 Done 47 - X
An education statistics organization reported recent average mathematics achievement scores for eighth graders in 50 regions. Complete parts a through c below. Click the icon to view the math achievement scores organized by region. a) Find the median, the sample mean, and the sample standard deviation of these regional averages. The median is (Type an integer or a decimal.) The sample mean is (Type an integer or a decimal.) The sample standard deviation is (Round to two decimal places as needed.) b) Write a brief summary of the performance of eighth graders across all the regions. The center is around The distribution of scores is (Type integers or decimals. Use ascending order.) Inco