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YEAR 9 (ma4)

Specifying a problem, planning and collecting data

Processing and representing data

Interpreting and discussing results


Specifying a problem, planning and collecting data        Top

Y9 Objectives


Suggest a problem and identify questions/conjectures


Discuss how data relates to problem and sources of data


Identify possible sources of bias and how to minimise


Plan/design survey/experiment to capture data


Design, trial and refine data collection sheets


Construct tables for large sets of raw data 


Design and use two-way tables


Gather data from specified secondary sources


Identify extra info. needed to pursue further enquiry


Processing and representing data                                  Top

Y9 Objectives


Calculate and select appropriate summary values


Find the median for large data sets


Estimate the mean for large sets of grouped data


Construct frequency polygons (ICT)


Use bar charts and frequency diagrams (ICT)

P  pie charts

Construct simple line graphs (ICT)


Construct scatter diagrams and discuss correlation (ICT)

W  Correlation

Identify the most appropriate representation of data


Identify the key features present in the data


Interpreting and discussing results                                  Top

Y9 Objectives


Interpret tables, diagrams and graphs - relate to problem

P    scatter diagrams

Analyse data to find patterns and exceptions


Look for cause and effect and try to explain anomalies


Compare 2+ distributions using shape, range and average


Communicate interpretations/results of a statistical enquiry


Examine critically the results of a statistical enquiry


Probability                                                                          Top

Y9 Objectives


Use vocabulary of probability

W  bags   W  probability words

Know sum of probabilities of m.e. outcomes is 1 or 100%

W  P  P  P  W  probability line

Identify all mutually exclusive outcomes of an experiment


W  Probability cards

Estimate probabilities from experimental data

Understand relative frequency as an estimate of probability


Compare experimental and theoretical probabilities


Appreciate difference between explanation and evidence



SMARTIES - data handling project


GOALS - data handling project


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