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8 glasses per day?

Do you drink 8 glasses of water per day?  This is the recommended number of glasses of water we should drink each day.

Do New Zealand students drink water regularly?  Can you predict what a graph of a sample of students will look like?

This activity uses a question from the 2005 database, to view this data in data viewer you must select from the Census at School 2005 population.

Students use the PPDAC cycle three times to investigate this question using increasing sample sizes and data from Census @ School. In each situation, they explore the distribution shape of their samples and make an inference of the population of NZ students.


Level 4

Achievement Objectives

  • Level 4
    • S4-1Plan and conduct investigations using the statistical enquiry cycle
      • A determining appropriate variables and data collection methods
      • B gathering, sorting, and displaying multivariate category, measurement, and time-series data to detect patterns, variations, relationships, and trends
      • C comparing distributions visually
      • D communicating findings, using appropriate displays

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