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Introduction to Data Collection
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Introduction to Data Collection
Hemi, Ngaio and Keira are helping at a busy post office. They want to find out which parcel service customers use most. Read the information, then answer the questions. For questions that ask you to design a survey, there may be more than one sensible answer.
Plan how to collect information
1.The helpers want to find out which parcel service customers use most. What does collecting data mean?
- Gathering information to answer a question
- Wrapping every parcel
- Guessing without asking
2.Which is the fairest way for the helpers to collect this information?
- Ask each customer which service they are using and record the answer
- Ask only the first customer
- Choose the service they like best
3.The helpers plan to ask, “You like the fast parcel service best, don’t you?” Explain why this is not a fair survey question, then write a fairer version.
4.Choose all the things that would help make the survey results useful.
- Ask a range of customers
- Record each answer as it is given
- Ask the same clear question each time
- Change the question for every customer
Record and read the results
Service
Tally
Courier parcel
||||
Tracked parcel
|||
Express parcel
||
5.Use the tally chart. How many customers were asked altogether? Show how you worked it out.
6.Which service was used by the greatest number of customers? How many customers chose it?
7.How many more customers chose courier parcel than express parcel?
8.Ngaio says, “Everyone at the post office uses courier parcel.” Does the tally chart support her statement? Explain using the data.
Design a useful survey
9.The helpers also want to learn what would make the post office easier to use. Write one clear, fair survey question they could ask. Include at least three possible answer choices.
10.Why should the helpers keep a tally chart while customers answer instead of relying on memory at the end?
3 printable pages
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