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Section 1-1
 Tables and Graphs
Warm-up
Refer to the Chapter 1 Opener on page 5. Find the percent of
 accidental deaths caused by each of the following methods:

    1. Motor Vehicle 47.8%
    Accidents                           5. Drownings 4.4%
    2. Falls 14.8%                      6. Choking 3.3%
    3. Poisoning 8.9%                   7. Firearms 1.7%
    4. Fires 4.7%
Statistics: Collection, organizing, analyzing and interpreting
            information
Data: Information that is collected
Variable: A certain characteristic of the person or thing that is being
          examined
Population: The entire set or collection of objects in the study
Sample: A portion of the population, used to study the population
Survey: Gathering information to be used in a study
Random Sample: A sample where every member of the population
               has the same opportunity of being chosen
Example 1
Matt Mitarnowski, who has recently become a physician, takes a
biopsy of a suspicious growth to check for malignancy. Identify the
variable, population, and sample.

   Variable: The condition of the growth.
  Population: The entire growth.
    Sample: The portion of the growth taken for the biopsy.
When reading a table...
1. What is being presented?
       Always be aware of what you are looking at.
2. Is the data trustworthy?
        Would you believe it if the Yankees organization said
        all Red Sox fans have no brains?
3. What conclusions can you draw from the data?
        Can you say something right away, or do you have to look
        further into the given information?
Example 2
Refer to the table on page 7. How many times as likely was a
family to have an income of less than $15,000 if the head of the
household had some high school, but no diploma rather than
graduated from high school?

                       About twice as likely.
               1.8 times, to be a little more specific.
                 How is this figured out?
Bar Graph: A graph that uses bars to represent the data



Circle Graph: A graph that is inside a circle. Each section is
              made up of a percentage of the whole and is
              created using central angles
Example 3
Continent                         Area 1000 mi2   Population (millions)

 Africa                                  11,700         878
Antarctica                                5,400           0
  Asia                                   17,400        3,340
Australia                                 3,300          29
 Europe                                   3,800         714
                                          9,400         292
North America
     Central & South
                                          6,900         481
        America
Source: 1996 World Almanac and Book of Facts
Example 3b
If the areas of the continents were measured in   km2,   would the
circle graph be different? Why or why not?

                                No

          The ratios remain the same, no matter the units
Section 1-1

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Section 1-1

  • 1. Section 1-1 Tables and Graphs
  • 2. Warm-up Refer to the Chapter 1 Opener on page 5. Find the percent of accidental deaths caused by each of the following methods: 1. Motor Vehicle 47.8% Accidents 5. Drownings 4.4% 2. Falls 14.8% 6. Choking 3.3% 3. Poisoning 8.9% 7. Firearms 1.7% 4. Fires 4.7%
  • 3. Statistics: Collection, organizing, analyzing and interpreting information Data: Information that is collected Variable: A certain characteristic of the person or thing that is being examined Population: The entire set or collection of objects in the study Sample: A portion of the population, used to study the population Survey: Gathering information to be used in a study Random Sample: A sample where every member of the population has the same opportunity of being chosen
  • 4. Example 1 Matt Mitarnowski, who has recently become a physician, takes a biopsy of a suspicious growth to check for malignancy. Identify the variable, population, and sample. Variable: The condition of the growth. Population: The entire growth. Sample: The portion of the growth taken for the biopsy.
  • 5. When reading a table... 1. What is being presented? Always be aware of what you are looking at. 2. Is the data trustworthy? Would you believe it if the Yankees organization said all Red Sox fans have no brains? 3. What conclusions can you draw from the data? Can you say something right away, or do you have to look further into the given information?
  • 6. Example 2 Refer to the table on page 7. How many times as likely was a family to have an income of less than $15,000 if the head of the household had some high school, but no diploma rather than graduated from high school? About twice as likely. 1.8 times, to be a little more specific. How is this figured out?
  • 7. Bar Graph: A graph that uses bars to represent the data Circle Graph: A graph that is inside a circle. Each section is made up of a percentage of the whole and is created using central angles
  • 8. Example 3 Continent Area 1000 mi2 Population (millions) Africa 11,700 878 Antarctica 5,400 0 Asia 17,400 3,340 Australia 3,300 29 Europe 3,800 714 9,400 292 North America Central & South 6,900 481 America Source: 1996 World Almanac and Book of Facts
  • 9. Example 3b If the areas of the continents were measured in km2, would the circle graph be different? Why or why not? No The ratios remain the same, no matter the units