Suffolkmaths Homepage

Handling Data Investigations

Crime Scene

The emphasis is to get away from the ‘here is some data work out the Mean, CF, IQR’ etc and more towards a contextual, problem solving direction. The PDF of the ‘Engaging Stats’ booklet which I recommend you have a look at. Pages 3-4 discuss in general terms the various issues. I suggest you use is the Crime Scene Evidence. This is simply based on a ‘suspects’ footprint and the following statistical inquiries that could be used to identify the culprit. The power point could be a useful way to introduce the task, either wholly or to ‘dip into’ when you want. You can then get a data set with your choice of sample size and age group. It was discussed that you may (upper end sets) wish to use and print off a larger set of data and then do your own sampling from that. Lower sets will probably just print off a smaller set sample for the class to work from.

There is clear progression through MMMR, pie charts, histograms and scatter-graphs(LOBF). However, there is of course scope for progression onto CF, IQR comparisons etc as well.
We have talked a lot about group work recently, and this would seem quite amenable to that. It is of course up to you how much ‘direction’ you want to give or not give with the use of the resources available, but it is the idea of ‘what’s going on here, what do we need to find out/use/apply in order to solve the problem ie find the culprit’.
I will also, with my group, probably finish with group presentations(possiblyinc ICT depending on availability).
This PowerPoint is useful particularly for the Level requirements 4-6 & 5-8(for the higher sets/levels, note  the web link to the  CensusAtSchool site, which can generate a much more diverse choice of date, inc foot/hand/height etc etc)
Finally, I also quite like the two student worksheets on the RSS website, one a writing frame(again might be particularly useful for lower sets) and the other a class feedback/evaluation(however you may want to extend the rather basic questions)

Websites: This website has a wide range of data collected from school children -

The four activities shown above have been designed as part of the QCA-RSS Centre Review Project. They have been trialled in a range of schools across the country.

Each activity contains teacher guidance, presentation materials (electronic and paper versions) and pupil worksheets. In addition the website contains links to real data which can downloaded as random samples -

Task and Resources involving the ability to estimate the size of angles and the lengths of a line

Guesstimate Introduction.ppt
Guesstimate Task.doc
Guesstimate Data.xls
Guesstimate Writing Frame.doc

Task and Resources looking at the analysis of World Statistics

Teacher Guide.doc
Task Sheet.doc
Marking Guidance.doc
World Data.xls


Task and Resources looking at the analysis of SATs results

Teacher Guide.ppt
SATs Data.xls
Writing Frame.doc
Self Assessment Marking Criteria.doc
Simplified Marking Criteria.doc