Lesson 2a.03

2a.03 Represent data sets graphically using calculated key values as necessary, and... Quiz: Pearson Edexcel Statistics, Unit 2

20 questions

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Lesson 2a.03, Represent data sets graphically using calculated key values as necessary, and...: 20 multiple choice questions for the Pearson Edexcel GCSE Statistics (1ST0), Unit 2: Processing, representing and analysing data, written with Revision Ninja.

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The 20 questions

  1. Which graphical format is most suitable for showing continuous change over time?

    • Scatter diagram
    • Line graph
    • Histogram
    • Pie chart

  2. Which diagram is best for showing the relationship between two numerical variables?

    • Choropleth map
    • Bar chart
    • Scatter diagram
    • Pie chart

  3. What type of bar chart shows a total split into its component parts?

    • Pie chart
    • Composite bar
    • Frequency polygon
    • Multiple bar

  4. How are bars arranged in a multiple bar chart for different groups?

    • Centred radially
    • Side by side
    • Stacked vertically
    • Overlapping

  5. Which chart is used for grouped continuous data with equal class widths?

    • Histogram
    • Pie chart
    • Line graph
    • Pictogram

  6. What points do straight lines join on a frequency polygon?

    • Class midpoints
    • Lower quartiles
    • Class boundaries
    • Peak values

  7. What is the general trend of any cumulative frequency curve?

    • Constant zero
    • Always decreasing
    • Fluctuating down
    • Never decreasing

  8. Which statistical values are clearly displayed on a box plot?

    • Total and sum
    • Median and quartiles
    • Range and variance
    • Mean and mode

  9. A histogram has equal class widths of 10. The bar for 40–49 has height 15. What is the frequency?

    • 10
    • 150
    • 15
    • 4.5

  10. Frequencies in three consecutive classes are 5, 7 and 8. What is the cumulative frequency at the third class?

    • 15
    • 20
    • 26
    • 8

  11. Which chart shows each category's parts as shares summing to 100 percent?

    • Percentage composite
    • Frequency polygon
    • Multiple bar
    • Stem plot

  12. Which graph type is best for showing monthly sales trends over two years?

    • Box plot
    • Pie chart
    • Scatter diagram
    • Line graph

  13. What does a positive pattern on a scatter diagram of study hours and test scores indicate?

    • Lower scores
    • Constant scores
    • No correlation
    • Higher scores

  14. A box plot's box runs from 12 to 20. What is the interquartile range?

    • 16
    • 8
    • 4
    • 12

  15. In a frequency polygon with class midpoint 15, what does the point at x = 15 represent?

    • Frequency density
    • Class frequency
    • Cumulative frequency
    • Class width

  16. A cumulative frequency curve for 60 students reaches 60 at its top. What is the total number of students?

    • 15
    • 30
    • 60
    • 120

  17. Why might a bar line chart combine monthly rainfall as bars and temperature as a line?

    • Display single totals
    • Compare two measures
    • Measure correlation
    • Show cumulative data

  18. Why can the y-axis of a histogram with equal class widths be labelled frequency?

    • Areas equal zero
    • Class boundaries shift
    • Widths equal frequency
    • Heights reflect frequency

  19. Group A has an IQR of 10 and Group B has an IQR of 4. What does this show?

    • Symmetric distribution
    • Greater middle spread
    • Higher median value
    • Larger overall range

  20. What term describes a time series line graph pattern that repeats each year?

    • Exponential growth
    • Seasonal cycle
    • Random variation
    • Long-term trend

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