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Match each z-score to its share

Exercise and reference answers

Matching pairs
  1. Left
    Within 1 sigma
    Right
    About 68 percent of values
  2. Left
    Within 2 sigma
    Right
    About 95 percent of values
  3. Left
    Within 3 sigma
    Right
    About 99.7 percent of values
  4. Left
    Whole curve
    Right
    Total area of exactly one
Instructions
Tap a band on the left, then tap the share of data it holds.

Explanation

_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 6 'The Normal Distribution', sections 6.1-6.3_
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