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Course: AP®︎/College Statistics > Unit 2

Lesson 2: Representing a quantitative variable with histograms and stem plots
Math
AP®︎/College Statistics
Exploring one-variable quantitative data: Displaying and describing
Representing a quantitative variable with histograms and stem plots
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Reading stem and leaf plots

Google Classroom

Problem

A statistician for a chain of department stores created the following stem-and-leaf plot showing the number of pairs of glasses at each of the stores:
|0010203040|90366801235690001233570
Key: 4|1=41 pairs of glasses
How many department stores have fewer than 38 pairs of glasses?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
department stores