1. ANALYZING DATA USING GRAPHS

2. Statistics  Statistics is the collection and classification of data that are in the form of numbers. Summarize Characterize Analyze Compare data.

3. Mean  A mean is the number obtained by adding up the data for a given characteristic and dividing this sum by the number of individuals.  Average

4. Distribution  Distribution is the relative arrangement of the members of a statistical population, and is usually shown in a graph  The graphs of many characteristics of populations, such as the heights of people, form bell-shaped curves.

5. Distribution

6. Probability  Probability is the likelihood that a possible future event will occur in any given instance of the event.  Probability is usually expressed as a number between 0 and 1 and written as a decimal rather than as a fraction  Large enough sample size in order to obtain accurate results.

7. Understanding the News  The news contains statistics everyday.  For example, a reporter might say, “A study shows that forest fires increased air pollution in the city last year.”  This could lead you to gather and then graph data on the pollution levels for last 20 years, and looking to see if this years seem unusually high.  Paying attention to statistics will make you a better consumer of information.

8. Risk  Risk is the probability of an unwanted outcome.  People often worry about big oil spills, but as the pie chart shows, there is a much greater risk of oil pollution from everyday sources.

9. Risk  Most citizens overestimate the risk of sensational environmental problems and underestimate the risk of ordinary ones.