1.2 An Introduction to Statistics Objectives: By the end of this section, I will be able to… 1) Describe what statistics is.

1.Write down the section number 2.Write down the date 3.Don’t write homework on the same page as notes 4.Take GOOD NOTES! WHY? Taking Notes:

STATISTICS WRITE IT DOWN! It involves collecting data, presenting it, analyzing it, and making meaningful decisions based on the data.

Who are these guys? What do they have in common? Article

Four Phases of statistics Phase 1: Data Collection Are you SUPERSTITIOUS? Does Friday the 13 th change human behavior?Friday the 13 th British Department of Transportation gathered data on traffic flow on two consecutive Fridays.

Four Phases of statistics Phase 2: Data Analysis

Four Phases of statistics Phase 3: Data Presentation Where do you display your information? – Internet/Websites – Newspapers – Magazines (ESPN or Sports Illustrated)

Four Phases of statistics Phase 4: Data Interpretation Statisticians must make their results understandable to a nonstatistician – hence you and me. People changed their behavior on Friday the 13 th based on the CONSISTENT decrease in the number of vehicles.

Critical Thinking Questions

 Statistics show that more mothers are entering the full time work force instead of staying home with children. Can we conclude that mothers do not care about their children anymore?

 Statistics show that there are more DUI arrests now than there ever has been in the US. Can we conclude that today’s drivers are worse than ever before?

Statistics show that men are getting hired for jobs more frequently than females. Of the 1.3 million jobs created in the last 12 months, some 90 percent have gone to men, according to a report from the Bureau of Labor Statistics. Women have gained just 149,000 jobs.Bureau of Labor Statistics What can you conclude about this?

Extra Practice Read about BALLOTS on page 4 and answer questions on the worksheet.BALLOTS

Homework Print one table and one MATCHING graph.