3, 5, 6, 6, 9, 11, 12, 13, 16, 19 3. What is the mean? А. 9 С. 11 В. 10 D. 12 4. What is Ex²? C. 1,228 D. 1,238 A. 1,208 B. 1,218 5. What is the standard deviation? А. 3.14 C. 5.14 В. 4.14 D. 6.14 6. What is the z-score of 16? A. 0.17 С. 1.17 В. 0.77 D. 1.47 7. What is the variance? A. 24.44 C. 27.44 В. 26.44 D. 29.44

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