Reflection: Staircase of Complexity Spread Out - Section 1: Opening


I really like the way these tasks unfold as they first ask students to do their own ranking of 4 sets of data from least spread out to most spread out. Next, students look at three different ways to rank the data and compare these methods to their own ranking.  I have found that following this sequence of activities leads to high student interest in standard deviation and helps them develop a strong understanding of the concept.

  Staircase of Complexity: Using student intuition to talk about spread
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Spread Out

Unit 5: Data and Statistics
Lesson 8 of 14

Objective: SWBAT rank data sets from least to most spread out based on their own reasoning. SWBAT examine and compare three different methods for ranking data. SWBAT understand mean absolute deviation.

Big Idea: How would you determine how spread out a data set is? Students put data sets in order from least to most spread out based on their own intuition and reasoning.

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Math, Statistics, standard deviation, mean absolute deviation
  60 minutes
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