Telling Stories with Data

Stowe Locke Teti1, Kelly Armstrong2

  • 1Clinical Ethicist at the Inova Fairfax Medical Campus in Falls Church, Virginia, USA, and Editor-in-Chief of Pediatric Ethicscope: The Journal of Pediatric Bioethics. stowe.teti@inova.org.

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Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
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A pie chart (or a pie graph) is a circular graphical chart or a pictorial representation of categorical data. It is divided into slices of pie each indicating numerical proportions. It is also used to show the relative sizes of data in a single chart.
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