9/7/11 Warm Up: Describe the Ws, indicate the type of variable(s) In November 2003 Discover published an article on the colonies of ants. They reported some basic information about many species of ants and the results of some discoveries found by myrmecologist Walter Tschinkel of the University of Florida. Information included the scientific name of the ant species, the geographic location, the depth of the nest (in feet), the number of chambers in the nest, and the number of ants in the colony. The article documented how new ant colonies begin, the ant-nest design, and how nests differ in shape, number, size of chambers, and how they are connected, depending on the species. It reported that nest designs include vertical, horizontal, or inclined tunnels for movement and transport of food and ants.
9/7/11 Review: Questions on homework, the 6 W’s?
9/7/11 Goal: Be able to • display and describe categorical data using frequency tables, bar charts, and pie charts
Make a Picture! Make a Picture! Make a Picture! The Three Rules of Data Analysis
Frequency Tables : a table of counts Titanic Passengers
Relative Frequency Tables : a table of percentages Total: 2,201 /2,201= 14.8% /2,201= 12.9% /2,201= 32.1% /2,201= 40.2% Titanic Passengers
<ul><li>When you are interested in parts of the whole, a pie chart might be your display of choice. </li></ul><ul><li>They slice the circle into pieces whose size is proportional to the fraction of the whole in each category. </li></ul>Pie Charts
<ul><li>9/7/11 </li></ul><ul><li>Homework: </li></ul><ul><li>HW #: Chap 3 </li></ul><ul><li>Questions: Chap 3, #5 - 13 odd </li></ul><ul><li>Reading: Chap 3, pgs 24 - 28 </li></ul>This is not a typical math class; answers are sentences, not numbers. Write conclusions that are c lear, c oncise, c omplete, and in c ontext.