Notebook AtlasSURG0002 · Research methods: go to the course map

AtlasSession 4L11: Graphical representation of data and measures of associationp.13–17

Graphs for categorical data

  1. 1 earlier topics
  2. Data and types of variables
  3. Summary statistics
  4. Summary measures by data type
  5. Tables
  6. Graphs for categorical data

Fig. 1

Fate of 120 subcutaneous PCL scaffolds in mice at 8 weeks: RGD-coated vs uncoated (scaffolds)

Fig. 1: Fate of 120 subcutaneous PCL scaffolds in mice at 8 weeks, as a one pie per group, counts. RGD-coated: Integrated about 34 in 100, Partially integrated about 9 in 100, Encapsulated about 31 in 100, Extruded about 26 in 100. Uncoated: Integrated about 8 in 100, Partially integrated about 28 in 100, Encapsulated about 30 in 100, Extruded about 34 in 100.

Group sizes
coated 70 · uncoated 50
Reading
— (tap a slice or bar to read it)

Chart Studio · First look

Chart type chart
Show scale

Level 1 · First look · Lecture 11 · p.13–17

Read a pie chart and a bar chart and compare two groups fairly.

Choose and read pie, simple, clustered and stacked bar charts for a categorical variable, overall and by group.

  1. Pizza slices (the step you are on)

    A pie split by favourite topping; bigger slice, more people.

    A pizza cut by favourite topping: the bigger the slice, the more people chose it. Here each pie is one group of scaffolds, cut by what happened to them.

step 1/4