Objectives:


Support:

  • Given a problem that can be addressed by statistical methods, suggest possible answers.
  • Design a data collection sheet or questionnaire to use in a simple survey;
  • construct frequency tables for discrete data.
  • Calculate statistics for small sets of discrete data:
    • find the mode, median and range;
    • calculate the mean, including from a simple frequency table, using a calculator for a larger number of items.
  • Construct, on paper and using ICT, graphs and diagrams to represent data, including:
    • bar-line graphs;
    • use ICT to generate pie charts.
  • Write a short report of a statistical enquiry and illustrate with appropriate diagrams, graphs and charts, using ICT as appropriate; justify choice of what is presented.

Core:

  • Discuss a problem that can be addressed by statistical methods and identify related questions to explore.
  • Decide which data to collect to answer a question, and the degree of accuracy needed; identify possible sources.
  • Plan how to collect the data, including sample size;
  • design and use two-way tables for discrete data.
  • Collect data using a suitable method, such as observation, controlled experiment using ICT, or questionnaire.
  • Calculate statistics, including with a calculator; recognise when it is appropriate to use the range, mean, median and mode; construct and use stem-and-leaf diagrams.
  • Construct, on paper and using ICT:
    • pie charts for categorical data;
    • bar charts and frequency diagrams for discrete data;
    • simple scatter graphs;
    • identify which are most useful in the context of the problem.
  • Interpret tables, graphs and diagrams for discrete data and draw inferences that relate to the problem being discussed; relate summarised data to the questions being explored.
  • Communicate orally and on paper the results of a statistical enquiry and the methods used, using ICT as appropriate; justify the choice of what is presented.
  • Solve more complex problems by breaking them into smaller steps or tasks, choosing and using resources, including ICT.

Extension:

  • Discuss how data relate to a problem; identify possible sources, including primary and secondary sources.
  • Gather data from specified secondary sources, including printed tables and lists from ICT-based sources.
  • Interpret graphs and diagrams and draw inferences to support or cast doubt on initial conjectures; have a basic understanding of correlation.

Key Vocabulary:

  • sample, primary source, secondary source, data log, two-way table, discrete, continuous, stem-and-leaf diagrams, scatter graphs, distance-time graph, line graph, pie chart.

Suggested Lesson Outcomes:


SUPPORT CORE

Framework:










Teaching & Learning Resources:


Data Resources
DH Cycle Resources
Interpreting Graphs Resources
Data Planning Resources
Graphs Resources
Bar Charts Resources
Frequency Diagram Resources
Pie Charts Resources
Averages Resources
Scatter Graph Resources