Lightning storms. Figure 11.9 comes from a study of lightning storms in Colorado. It shows the distribution of the hour of the day during which the first

lightning flash for that day occurred. Describe the shape, center, and spread of this distribution. Are there any outliers?

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25 25 20 20 15 Count of first lightning flashes 10. 0 7A.M. 8 A.M. 9A.M. 10AM. 11 AM. Noon 1P.M. 2 P.M. 3PM. 4PM 5PM. Time of day Figure 11.9 Histogram of the time of day when the day's first lightning flash occurred (from a study in Colorado), for Exercise 11.3. (Based on an episode in the Annenberg/ Corporation for Public Broadcasting telecourse Against All Odds: Inside Statistics.)