11. Which one of these statistics is unaffected by outliers? A. Interquartile range B. Mean C. Standard deviation D. Range 12. By inspection, determine which of the following sets of numbers has the smallest standard deviation. A. 2, 3, 4, 5 B. 4,4,4,5 C. 5,5, 5, 5 D. 0, 0, 5, 5 13. For a large sample of blood pressure values, the mean is 120 and the standard deviation is 10. Assuming a bell-shaped curve, which interval is likely to be about the interval that contains 95% of the blood pressures in the sample? A. 110 to 130 B. 100 to 140 C. 90 to 150 D. 50 to 190 14. Scores on an achievement test averaged 70 with a standard deviation of 10. Serena's score was 85. What was her standardized score (also called a z-score)? A. -1.5 B. 1.5 C. 15 D. 85 Short answer Answer question 15 based on the following study (1/2 pt each): 15. Courtney conducted a study to determine whether students who identify as LGBTQ+ (gay, lesbian, bisexual, transgender, queer/questioning) were bullied more in school. Please write your answer on the answer sheet. A. What is the dependent variable? B. What is the independent variable?