Relating parts of the data to the whole

As you explore and analyze data, you'll often want to understand how various parts add up to a whole. For example, you'll ask questions like these:

  • How many patients with different admission statuses (in-patient, out-patient, observation, or ER) make up the entire population of patients in the hospital?
  • What is the percentage of total national sales made in each state?
  • How much space does each file, subdirectory, and directory take on my hard disk?

These types of questions ask about the relationship between the part (patient type, state, or file/directory) and the whole (the entire patient population, national sales, and hard disk). There are several types of visualizations and variations that can aid you in ...

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