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Practical Data Analysis with JMP® by Robert Carver

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Application

Now that you have completed all of the activities in this chapter, use the techniques you've learned to respond to these questions.

  1. Scenario: We'll continue our analysis of the variation in life expectancy at birth. We'll begin with the subset of the Life Expectancy file, focusing initially on the 2010 data.

    1. When we first constructed the Life Exp histogram, we described it as single-peaked and left-skewed. Use the hand tool to increase and reduce the number of bars. Adjust the number of bars so that a second peak appears. Describe what you did, and where the peaks are located.

    2. Rescale the axes of the same histogram and see if you can emphasize the two peaks even more (in other words, have them separated distinctly). Describe what you ...

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