|Task Name : Census@School
|Task Level : I (Year 8)
|Semester : 2
|Topic : Data
|VC Strand : Data
|Web Address : http://maths.crusoecollege.vic.edu.au/dataI
|Equipment Needed : Access to the Census@school website; access to Excel or equivalent
|Victorian Curriculum outcome : Explore the practicalities and implications of obtaining data through sampling using a variety of investigative processes. Investigate the effect of individual data values, including outliers, on the mean and median. Explore the variation of means and proportions in of random samples drawn from the same population. Investigate techniques for collecting data, including census and sampling
|Task description : this task is in three parts – all use the Census@School website. In part one, students are required to analyse small samples of students and comment on the variation of the samples using calculations of mean, median, mode and range. In part two, they look at larger samples and comment on outliers and the effects on the mean and median. In part three, they take their own sample data from their class and comment on how accurately this reflects the true median and mean. All reflective questions can be found in the spreadsheets on the task’s webpage.
|Assessment options : Excel spreadsheet or screenshots
|Teacher notes : This task uses the census@school website – familiarising yourself with it is helpful before introducing the task.
Downloads : Census @ School task I and 6 random samples (female) and 6 random samples (male) and Statistics Task I part 2
Because the ABS has discontinued the CAS, we need another source of data. There is an international CAS with a random sampler here: