Statistics Question
Name Class QUIZ 1 PART 1 Parking at Ohlone College has become a very big problem. College administrators are interested in determining the average parking time of its students. An administrator randomly followed 20 students and carefully recorded their parking times in hours. 2, 3.5, 2, 1, 3, 3, 2, 1, 3, 2, 5, 4, 2.5, 2.5, 1, 3.5, 4, 4.5, 2, 3 1. What is the population? 2. What is the parameter? 3. What is the sample? 4. What is the statistic? 5. What is variable? 6. What is data? 7. What type of sampling is it? why? 8. What type of data is it? why? 9. Find đť‘„1 , đť‘„2 , đť‘„3 10. Set up Frequency, Relative Frequency, and Cumulative Frequency table. Find the probability that a student parks less than 2 hours. Part 2 1. In a survey, 26 voters were asked their ages. The results are shown below. Construct a histogram to represent the data (with 5 classes beginning with a lower class limit of 19.5 and a class width of 10). What is the shape of the graph? Make prediction among the mean, the median, and the mode. 43 56 28 63 67 66 52 48 37 51 40 60 62 66 45 21 35 49 32 53 61 53 69 31 48 59 2. The test scores of 32 students are listed below. Construct a boxplot for the data set. 32 37 41 44 46 48 53 55 57 57 59 63 65 66 68 69 70 71 74 74 75 77 78 79 81 82 83 86 89 92 95 99 Use Boxplot method to find the potential outlier(s).
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