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Statistics and probability

Course: Statistics and probability > Unit 3

Lesson 3: Interquartile range (IQR)
Math
Statistics and probability
Summarizing quantitative data
Interquartile range (IQR)
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Interquartile range (IQR)

AP.STATS: UNC‑1 (EU), UNC‑1.J (LO), UNC‑1.J.1 (EK), UNC‑1.J.2 (EK) CCSS.Math: 6.SP.B.5, 6.SP.B.5c
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Problem

Each dot in the following dot plot represents the number of jokers in one of Marcie's decks of cards.
A dot plot has a horizontal axis labeled Number of jokers numbered from 0 to 4. Dots are plotted above the following: 0, 3; 1, 1; 2, 5; 3, 1; 4, 1.
Find the interquartile range (IQR) of the data in the dot plot.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
jokers
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