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4:01Graphical Analysis In Exercises 41 and 42, the midpoints A, B, and C are marked on the histograms at the left. Match them with the indicated z-scores. Which z-scores, if any, would be considered unusual?
z = 0, z = 2.14, z = −1.43
Using the Empirical Rule In Exercises 29–34, use the Empirical Rule.
The speeds for eight vehicles are listed. Using the sample statistics from Exercise 29, determine which of the data entries are unusual. Are any of the data entries very unusual? Explain your reasoning.
70, 78, 62, 71, 65, 76, 82, 64
Using and Interpreting Concepts
Finding and Discussing the Mean, Median, and Mode In Exercises 17–34, find the mean, the median, and the mode of the data, if possible. If any measure cannot be found or does not represent the center of the data, explain why.
Prices (in dollars) of Flights from Chicago to Alanta
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Phone Screen Sizes Display the data below in a dot plot. Describe the differences in how the stem-and-leaf plot and the dot plot show patterns in the data.
Building Basic Skills and Vocabulary
Describe the relationship between quartiles and percentiles.
Graphing Data Sets In Exercises 17–32, organize the data using the indicated type of graph. Describe any patterns.
Life Spans of Houseflies Use a dot plot to display the data, which represent the life spans (in days) of 30 houseflies.
9 9 4 11 10 5 13 9 7 11 6 8 14 10 6
10 10 7 14 11 7 8 6 13 10 14 14 8 13 10
