Chapter 7: Persuasion or Manipulation? (Truncated Axes)

• The truncated axes: complicated but should be used with thought.

Chapter 7: Persuasion or Manipulation? (Dual Axes)

• It creates a relationship by fiat.

Chapter 7: Persuasion or Manipulation? (Maps)

Tools questions

• Grouping
• Filtering
• Annotations

Why does height measure health?

• Let’s plot each child’s height by their age.
• What can we discern about each child?
• What can we discern about each country?

Understanding Z-scores

• How can Z-scores be a measure of health?

\[Z = \frac{x - \mu}{\sigma}\]

Let’s check the z-score calculations of our data

• Calculated Fields
• Plotting LAZ by agedays