2a.02 Interpret and compare data sets displayed pictorially: population pyramid, choropleth... Quiz: Pearson Edexcel Statistics, Unit 2

The 20 questions

1. What does a population pyramid primarily display?

   • Age and sex structure
   • Height and weight
   • Income and occupation
   • Birth and death rates

2. What graphical technique do choropleth maps use to represent statistical data across regions?

   • Proportional circles
   • Shading or colour
   • Flow arrows
   • Vertical bars

3. In comparative pie charts representing different sample sizes, what represents the total frequency?

   • The slice angle
   • The outer circumference
   • The circle radius
   • The total area

4. Which graphical display shows males and females on opposite sides?

   • Cumulative frequency graph
   • Scatter diagram
   • Pie chart
   • Population pyramid

5. What is a major visual limitation of using 3D representations for statistical comparison?

   • Inverting data axes
   • Removing colour scales
   • Distorting value sizes
   • Eliminating category labels

6. In a standard choropleth map, what does a darker shade typically represent?

   • A lower value
   • A higher value
   • A negative frequency
   • An average mean

7. Which graphical method is best suited for comparing regional data such as unemployment rates?

   • Pie chart
   • Choropleth map
   • Population pyramid
   • Scatter diagram

8. What is a vital check before comparing two graphical data representations side by side?

   • Randomised sample orders
   • Different chart types
   • Identical scales and keys
   • Bright contrasting colours

9. What does a population pyramid with a very wide base and narrow top suggest?

   • High life expectancy
   • Many young people
   • Zero population growth
   • An aging population

10. On a choropleth map where darker means higher, Region B is darker than Region A. What follows?

    • Region B has more
    • Data is inconclusive
    • Regions are equal
    • Region B has less

11. Comparative pie charts: Year 1 has total 200 and radius 3 cm; Year 2 has total 800, with area proportional to total. What radius is needed for Year 2?

    • 6 cm
    • 3 cm
    • 12 cm
    • 4 cm

12. What main issue do 2D charts avoid compared to 3D charts in data comparison?

    • Complex labelling
    • Colour saturation
    • High printing costs
    • Visual distortion

13. What does a high frequency of individuals in the 0-4 age group on a pyramid imply?

    • High net migration
    • Low infant mortality
    • High recent births
    • Increased life span

14. On a choropleth map with light-to-dark shading, what do the darkest areas represent?

    • Missing data regions
    • The lowest values
    • The median value
    • The highest values

15. What is a common error when drawing comparative pie charts for different totals?

    • Equal-size circles
    • Missing legends
    • Different angles
    • Unequal sectors

16. Which demographic group is larger if the male bar is longer on a population pyramid?

    • Both equal
    • Males
    • Dependent
    • Females

17. What main feature must be identical when comparing two choropleth maps?

    • Map borders
    • Sample sizes
    • Total areas
    • Shading scales

18. What graphical feature on a choropleth map is essential for interpreting the shaded regions accurately?

    • Grid lines
    • Data key
    • Scale bar
    • Compass rose

19. What graphical distortion occurs when front bars appear larger than back bars of equal value?

    • Class bias
    • Perspective error
    • Scale inversion
    • Truncated axis

20. How should two countries with very different total populations be compared fairly on a bar chart?

    • Total sums
    • Using percentages
    • Fixed averages
    • Raw numbers

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