Seminar II 242 702 Semester 1 2021 2022

Seminar II 242 -702 , Semester 1, 2021 -2022 7. Graphing Problems From "Calling Bullshit: The Art of Skepticism in a Data-Driven World", Carl Bergstrom and Jevin West, 2020

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Are Stand Your Ground laws good? 242 -702. Seminar II. Graphing/7 3

Probably not 242 -702. Seminar II. Graphing/7 4

Choice of Graphs 242 -702. Seminar II. Graphing/7 5

Better Choice 242 -702. Seminar II. Graphing/7 6

Duck Graphs 242 -702. Seminar II. Graphing/7 Data graphics should be about the data, not about eye-catching decoration. Graphs that violate this principle are called “ducks. ” 7

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Glass Slippers Glass slippers take one type of data and shoehorn it into a visual form designed to display another. GOOD. The left-to-right positions reflect what we now understand to be the fundamental atomic structure of each element 242 -702. Seminar II. Graphing/7 10

But not… 242 -702. Seminar II. Graphing/7 11

Not Venn Diagrams 242 -702. Seminar II. Graphing/7 12

Labelled Schematics 242 -702. Seminar II. Graphing/7 13

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Quebec is a low-trust society Misleading Axes 242 -702. Seminar II. Graphing/7 15

a bar graph emphasizes the absolute magnitude of values 242 -702. Seminar II. Graphing/7 16

Another Way to include 0 242 -702. Seminar II. Graphing/7 17

Line Graphs emphasize change 242 -702. Seminar II. Graphing/7 18

Line Graph Ranges made graphical display choices that are consistent with the story you are telling 242 -702. Seminar II. Graphing/7 19

Two Vertical Scales 242 -702. Seminar II. Graphing/7 20

Misleading Horizontals 242 -702. Seminar II. Graphing/7 21

Watch the Ticks 242 -702. Seminar II. Graphing/7 22

Uneven Bins Most of the taxable income, according to this figure, comes from the “middle class, ” 242 -702. Seminar II. Graphing/7 23

Or… 242 -702. Seminar II. Graphing/7 24

Genes and Education Bins 242 -702. Seminar II. Graphing/7 25

Proportional Ink When a shaded region is used to represent a numerical value, the size (i. e. , area) of that shaded region should be directly proportional to the corresponding value. 242 -702. Seminar II. Graphing/7 26

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Donut Charts A donut bar chart can exaggerate or conceal the differences between values, depending on how it is designed. In the chart shown, the amount of ink used for each band exaggerates the differences in band sizes. 242 -702. Seminar II. Graphing/7 28

Comparing Different Quantities 242 -702. Seminar II. Graphing/7 29

Poor Use of 3 D 242 -702. Seminar II. Graphing/7 30

Be careful with 3 D 3 D bar charts can serve a legitimate purpose when they are used to display values associated with a pair of independent variables 242 -702. Seminar II. Graphing/7 31

3 D Size Distortion 242 -702. Seminar II. Graphing/7 32

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