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COLLECT
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By selecting sources of
information for tasks, including
- practical experiments;
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- surveys using questionnaires;
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- sampling using a simple strategy.
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Estimate how much water is wasted
by
a dripping tap in 1 week by measuring
loss in 1 hour.
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By selecting sources of
information for tasks, including
- practical experiments :- recognise
discrete (countable) and continuous
(measureable) data;
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number of faulty items in a batch
(discrete); time taken by competitors
in a 100 m race (continuous).
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- surveys using structured
questionnaires which allow several
responses to each question;
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- sampling using a strategy which
avoids bias.
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Asking 50 people leaving a local
disco, "Should the disco be closed down?"
may produce distorted results;
Writing the names of each pupil
in a
class on a raffle ticket, placing the
tickets in a drum, mixing them up
and drawing 3 tickets gives each
pupil an equal chance of being
chosen.
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