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Frequency, Percentage, and Proportion Statistical Based Graphical Displays

Frequency, Percentage, and Proportion Statistical Based Graphical Displays. Frequency Polygon. a graph that displays the data using lines to connect points plotted for the frequencies. The frequencies represent the heights of the vertical bars in the histograms. Frequency Polygon.

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Frequency, Percentage, and Proportion Statistical Based Graphical Displays

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  1. Frequency, Percentage, and ProportionStatistical Based Graphical Displays

  2. Frequency Polygon • a graph that displays the data using lines to connect points plotted for the frequencies. • The frequencies represent the heights of the vertical bars in the histograms.

  3. Frequency Polygon • Ex: Frequency Polygon superimposed on the weight class histogram.

  4. Stem-and-Leaf Plots • AKA Stem-and-Leaf Displays • part of the data value is used as the stem • forms from the data classes • the remaining part of the data is used as the leaves • forms form the actual data values Consider the following numerical data 96, 98, 107, 110, 112

  5. Stem-and-Leaf Plots Ex: Consider the following numerical data 96, 98, 107, 110, 112

  6. Stem-and-Leaf Plots Ex: Consider the following numerical data 96, 98, 107, 110, 112

  7. Stem and Leaf

  8. Time-Series Plots • AKA Time-Series Graph • displays data that are observed over a given period of time • typically represented as a line segment

  9. Time-series plot

  10. Pie Chart • AKA Pie Graph • displays data in a circle that is divided into slices according to the percentage of the data values in each category (qualitative data) or class (quantitative data).

  11. Pie Chart

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