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Check
your skills - set A
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Question 1:
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A company needs to
gather information about how employees
views on the food in the canteen.
What method would they use to gather the data?
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Content:
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Graphic: Photo montage of an office scene.
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Answer:
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C.
Use questionnaires.
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Question 2:
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What method should be used to gather data about the number of
daily telephone orders received by call centre employees?
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Content:
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Graphic:
Photo montage of call centre employees.
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Answer:
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B. Use tallies.
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Question 3:
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What method should be used to gather data about the three different types of quality
control failures that occur in a day?
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Content:
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Graphic: Photo montage of quality control testing of
electrical devices.
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Answer:
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B. Use tallies.
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Question 4:
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What method should be used to gather data about the amount of stock in a warehouse?
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Content:
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Graphic: Photo of warehouse
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Answer:
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A. Do a count.
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Check
your skills - set B
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Question 1:
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What method should be used to gather data about the number of
daily Internet orders received by a sales department?
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Content:
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Graphic: Photo montage of an office scene.
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Answer:
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B. Use tallies.
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Question 2:
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What method should be used to gather data about how many of each component are held in
stock?
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Content:
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Graphic: Photo of manufacturing environment.
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Answer:
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A. Do a count.
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Question 3:
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What method should
be used to gather data about
employees views on company facilities?
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Content:
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Graphic: Photo montage of company facilities – eg,
payphone, drinks/food machine, gym etc
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Answer:
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C. Use questionnaires.
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Question 4:
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What method should be used to gather data about the number of
machines running at any one time?
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Content:
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Graphic: Loop of photos of variety of machines in
automated manufacturing scenarios.
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Answer:
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A. Do a count.
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Learn
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Screen 3:
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Which method of data collection would be most appropriate for
each of these surveys?
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Content:
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Graphic:
Survey 1: Find out the
average amount of liquid in a tin of baked beans.
Best data collection
method:
Survey 2. Find out the
proportion of sparrows to pigeons in the town square and in the park.
Best data collection
method:
Survey 3. Find out
whether there is likely to be enough demand to install a chocolate
vending machine at work.
Best data collection
method:
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Answer:
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Take measurements
Observe events
Talk to people
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Screen 6:
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If you were planning a survey to find out what kind
of food students like to eat, would your survey be biased if you only asked vegetarian students?
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Content:
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Graphic:
Photo of students in a canteen.
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Answer:
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Yes
Vegetarians
don’t eat meat, so they would say that they only like to eat foods that
don’t contain meat, making your results biased.
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Screen 7:
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From which of these
surveys would you have most confidence in making generalisations?
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Content:
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Graphic:
Survey 1: A company wants to find out if
employees are happy with the canteen facilities. 10 questionnaires are
given out, all to senior managers.
Survey 2: A company wants to find out if
employees are happy with the canteen facilities.
100 questionnaires are
given out, to the first 100 names on the payroll.
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Answer:
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B.
Survey 2.
When you’re doing a survey, the more data you can
collect the more representative your results will be.
You should also aim to choose a random sample so
that your results will be as unbiased as possible.
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