The histogram in Figure 9 shows the times between eruptions of Old Faithful geyser in Yellowstone National Park for a sample of 300 eruptions (with 299 times between eruptions). Over the histogram, draw a smooth curve that captures its general features. Then classify the distribution according to its number of modes and its symmetry or skewness. In words, summarize the meaning of your results.

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60 50 50 Times Between Eruptions of Old Faithful 40 40 Frequency 30 20 20 10 0 50 60 70 80 90 100 110 Times (minutes) Figure 9 Source: Hand et al., Handbook of Small Data Sets.