(6 points) Daily air quality is measured by the Environmental Protection Agency.
ID: 3073840 • Letter: #
Question
(6 points) Daily air quality is measured by the Environmental Protection Agency. This index reports the pollution level for five major air pollutants regulated by the Clean Air Act, one of which is nitrogen dioxide (NO2). The maximum1-hour NO2 concentration in parts per billion (ppb) was reported for a sample of 90 days in 2016 tor the Detroit-Warren-Dearborn region in Michigan. The boxplot and relative frequency histogram below show the distribution of the NO2 values on these ine .03 Daly maximum 1-hour NO2 Concentration in ppb 1. Use the histogram to help you match the statistic to the closest number b. Median c 03 2. The mean of the data set will be? v the median because the histogram is Note: You can earn partiel credit on this problem.Explanation / Answer
Answer:
1.
(a) Quartile1 Q1 = 17
(b) Median = 23
(c) Quartile 3 Q3 = 29
(d) IQR = Q3 - Q1 = 29 - 17 = 12
2. The mean of the data set will be equal to the median because the histogram is
symmetric.
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