Crowd Management strategies monitors accidents at rock concerts. In their database, they list the names and other variables of victims whose deaths were attributed to \"crowd crush\" at rock concerts. Here are the histogram and boxplot of the victims' ages for data from a recent one-year period. Complete parts a) through d) below. Click here for the histogram and boxplot of the victims' ages. outliers. D. The median would be the most appropriate measure of center because of the slight skew and the extreme outliers. d) What summary statistic would be chosen to summarize the spread of this distribution? Why? A. The standard deviation would be the most appropriate measure of spread because of the slight skew and the extreme outliers. B. The IQR would be the most appropriate measure of spread because of the slight skew and the extreme outliers. C. The IQR would be the most appropriate measure of spread because of the symmetrical shape of most of the histogram. D. The standard deviation would be the most appropriate measure of spread because of the symmetrical shape of most of the histogram.
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The histogram shows the distribution of the victims' ages, with the x-axis representing the age range and the y-axis representing the frequency or count of victims in each age range. The histogram appears to be slightly skewed to the right, as there are more Show more…
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Crowd Management Strategies monitors accidents at rock concerts. In their database, they list the names and other variables of victims whose deaths were attributed to "crowd crush" at rock concerts. Here are the histogram and boxplot of the victims' ages for data from a recent one-year period. a) What features of the distribution are seen in both the histogram and the boxplot? A. Essentially symmetric, very slightly skewed to the left with two high outliers at 36 and 48. Most victims are between the ages of 24 and 30. B. Essentially symmetric, very slightly skewed to the right with two high outliers at 18 and 28. Most victims are between the ages of 32 and 42. C. Essentially symmetric, very slightly skewed to the right with two high outliers at 36 and 48. Most victims are between the ages of 24 and 30. D. Essentially symmetric, very slightly skewed to the right with two high outliers at 36 and 48. Most victims are between the ages of 16 and 24.
Jerelyn N.
Still rockin’ Crowd Management Strategies monitors accidents at rock concerts. In their database, they list the names and other variables of victims whose deaths were attributed to “crowd crush” at rock concerts. Here are the histograms and boxplot of the victims’ ages for the data from 1999 to 2000: a) What features of the distribution can you see in both the histogram and the boxplot? b) What features of the distribution can you see in the histogram that you could not see in the boxplot? c) What summary statistic would you choose to summarize the center of this distribution? Why? d) What summary statistic would you choose to summarize the spread of this distribution? Why?
Exploring and Understanding Data
Displaying and Summarizing Quantitative Data
Question 1: Select one answer. 10 points This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze. _u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png Assume that the largest observation in this dataset is 8.6 minutes. If this observation were wrongly recorded as 86, then what would happen to the mean and median? A) Neither the mean nor the median would change. B) Both the mean and the median would change. C) The mean would stay the same, but the median would change. D) The mean would decrease, but the median would not change. E) The mean would increase, but the median would not change. Question 2: Select one answer. 10 points This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze. _u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png Which of the following best describes the shape of the histogram? A) Symmetric B) Left-skewed with no outliers C) Right-skewed with no outliers D) Left-skewed with a possible outlier E) Right-skewed with a possible outlier Question 3: Select one answer. 10 points This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze. _u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png Which of the following is a possible value of the median in this example? A) 3.3 B) 3.9 C) 4.6 D) 5.5 Question 4: Select one answer. 10 points Here are the number of hours that 9 students spend on the computer on a typical day: 1 6 7 6 8 11 6 12 15 The data from the above 9 students form what type of distribution? A) Unimodal B) Ultimodal C) Bimodal Question 5: Select one answer. 10 points The histogram below displays the distribution of 50 ages at death due to trauma (accidents and homicides) that were observed in a certain hospital during a week. _u2_summarizing_data/_m1_examining_distributions/webcontent/assessment1q2.gif What percentage of deaths were individuals younger than 35? A) 34% B) 60% C) 68% D) 70% E) 80%
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