Prior-to-Class Quiz 1_ Statistics for Business-T123PWB-1

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Apr 3, 2024

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12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 1/8 In-class Quiz 1 Due Jan 14 at 12:25pm Points 10 Questions 10 Available after Jan 14 at 12:05pm Time Limit 15 Minutes Attempt History Attempt Time Score LATEST Attempt 1 15 minutes 10 out of 10 Correct answers are hidden. Score for this quiz: 10 out of 10 Submitted Jan 14 at 12:20pm This attempt took 15 minutes. 1 / 1 pts Question 1 Which criterion is least likely to be used in choosing bins (classes) in a frequency distribution? Using aesthetic judgment Always starting at zero Bins can start at any value. Following Sturges' Rule Selecting "nice" class (bin) limits 1 / 1 pts Question 2
12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 2/8 This histogram shows Chris's golf scores in his last 77 rounds at Devil's Ridge. Which is not a correct statement? About 15 percent of his scores are in the interval 74 < 76. The number of bins is consistent with Sturges' Rule. Sturges' Rule suggests k = 1 + 3.3 log(77) = 7.22 or about 7 bins. The histogram has a noticeable bimodal shape. The modal class is 78 < 80. 1 / 1 pts Question 3 The distribution pictured below is:
12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 3/8 bimodal and skewed right. You can see two modes and a longer right tail. skewed right. bimodal and skewed left. skewed left. 1 / 1 pts Question 4 The distribution pictured below is: skewed left.
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12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 4/8 You can see one mode and a long left tail. bimodal and skewed left. skewed right. bimodal and skewed right. 1 / 1 pts Question 5 The point halfway between the bin limits in a frequency distribution is known as the: bin midpoint. Bin midpoint is the average of the bin limits. bin width. bin frequency. bin limit. 1 / 1 pts Question 6 To classify prices from 62 recent home sales, Sturges' Rule would recommend: 10 classes. 8 classes.
12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 5/8 7 classes. Sturges' Rule suggests k = 1 + 3.3 log(62) = 7 bins. 9 classes. 1 / 1 pts Question 7 Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. How many vehicles were traveling exactly the speed limit (70 mph)? Impossible to tell 1 Fourth stem has only one value of 70. 19 0
12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 6/8 1 / 1 pts Question 8 Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. What is the highest observed speed? 87 92 Last stem top data value is 92. Impossible to tell 90 1 / 1 pts Question 9 Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. What is the fourth slowest speed in the sorted data array?
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12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 7/8 60 61 Third stem second data value is 61. Impossible to tell 55 1 / 1 pts Question 10 Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. The modal class is:
12:20, 14/01/2023 In-class Quiz 1: Statistics for Business-T123PWB-1 https://learn.kfo.edu.vn/courses/205/quizzes/2918 8/8 80 but less than 90. impossible to determine. 70 but less than 80. All the raw data are available, so we can calculate any statistic. 60 but less than 70. Quiz Score: 10 out of 10