Lesson 3: Stemplots and Histograms

August 30, 2015

Mon Aug 31

Review:

• Intro to Data Analysis
• Google Sheets and data access requests

Presentation:

• Data Distribution
• Stemplot video
• Histogram video
• Stemplot demo
• Histogram demo

Activity:

• Create stemplots by hand
  • Problem 2.1 on p. 69
  • Problem 2.2 on p. 70

Assignment:

• Create histograms using Google Sheets and the data for the problems below.

  • 2.7 The following data are the shoe sizes of 50 male students. The sizes are continuous data since shoe size is measured. Construct a histogram and calculate the width of each bar or class interval. Suppose you choose six bars. 9; 9; 9.5; 9.5; 10; 10; 10; 10; 10; 10; 10.5; 10.5; 10.5; 10.5; 10.5; 10.5; 10.5; 10.5 11; 11; 11; 11; 11; 11; 11; 11; 11; 11; 11; 11; 11; 11.5; 11.5; 11.5; 11.5; 11.5; 11.5; 11.5 12; 12; 12; 12; 12; 12; 12; 12.5; 12.5; 12.5; 12.5; 14

  • 2.9 The following data represent the number of employees at various restaurants in New York City. Using this data, create a histogram. 22; 35; 15; 26; 40; 28; 18; 20; 25; 34; 39; 42; 24; 22; 19; 27; 22; 34; 40; 20; 38; and 28 Use 10–19 as the first interval.

  • Post to your blog
• Reading p. 67-69 and 76-77