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Week Two Quiz 1. In a Gallup poll of 1,038 adults, 540 said that second-hand smoke is very harmful. What is the percentage of adults who said second-hand smoke is very harmful? Show the problem: 540/1,038 = 0.5202 Solution: 52.02%, which equates to 52% when rounded 2. The first class in a relative frequency table is 50-59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate? Solution: 20% of the rating comes within this stated class. 3. When you add the values 3, 5, 8, 12, and 20 and then divide by the number of values, the result is 9.6. Which term best describes this value: average, mean, median, mode, or standard deviation? Answer: The Mean 4. What is the range of the values 2.0, 3.7, 4.9, 5.0, 5.7, 6.7, 8.5, and 9.0? Answer: 9-2=7 What is the median? Median = (N+1)/2 = 9/2 = Scale of 4.5th item = 4Th item + 0.5(5th - 4th item) = 5+0.7(0.5) = 5.35 What is the mean? Total/Quantity of values = 45.5/8 = 5.6875, which equates to when rounded What is the mode? 2.0, 3.7, 5.0, 5.7, 6.7, 8.5, and 9.0 5.69 Mode is always that figure which appears the most number of times however in this scenario because rate of recurrence of all numbers is 1, cannot be found. for that reason mode