1.2 An Introduction to Statistics

Objectives:By the end of this section, I will beable to…1) Describe what statistics is.

1. Write down the section number2. Write down the date3. Don’t write homework on the same page

as notes4. Take GOOD NOTES! WHY?

Taking Notes:

STATISTICSWRITE 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 statisticsPhase 1: Data Collection

Are you SUPERSTITIOUS? Does Friday the 13th change human

behavior?British Department of Transportation

gathered data on traffic flow on two consecutive Fridays.

Four Phases of statisticsPhase 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 13th 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.

What can you conclude about this?

Extra PracticeRead about BALLOTS on page

4 and answer questions on the worksheet.

HomeworkPrint one table and one MATCHING graph.