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Data Collection Tools

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Data Collection Tools

A group is planning a beach clean-up at a local harbour. Read each situation carefully. Choose or describe a way to collect useful data, and explain your thinking where asked. Data can be quantitative (numbers or measurements) or qualitative (descriptions or opinions).

Plan the data collection

The group wants to learn about rubbish found on the beach and how volunteers work together.

1.Volunteers need to count each type of rubbish as they collect it: plastic bottles, cans, wrappers and other items. Which tool is best for keeping a quick, accurate count?

A tally chart
A feelings survey
An interview
A map

2.Write one quantitative question the group could investigate about the clean-up. It must have an answer that is a number or measurement.

3.Which question would collect qualitative data about volunteers’ experiences?

How many bags did each team fill?
How long did the clean-up take?
What was the most surprising thing you found, and why?
How many volunteers attended?

4.At the end of the clean-up, the organiser asks every volunteer to rate how easy it was to sort rubbish: very easy, easy, difficult or very difficult. Is this quantitative or qualitative data? Explain your choice.

5.A volunteer records the number of rubbish items found every 10 minutes, using a timer. What data collection method is being used?

Random sampling
Systematic sampling
An interview
A one-off survey

6.The group wants to find out which rubbish category is most common. They count 18 wrappers, 7 cans, 11 plastic bottles and 4 other items. What is the total number of items, and which category is most common?

7.The organiser wants to compare how many bags each of four teams filled. Which display would make the comparison easiest to see?

A bar graph
A line graph showing months
A map of the beach
A clock face

8.A volunteer asks only their three friends whether they enjoyed the clean-up, then says everyone at the event enjoyed it. Explain why this conclusion may not be reliable, and suggest one improvement.

9.The group records how many rubbish items are collected, but different volunteers count in different ways. Name one step they could take to make the results more consistent.

10.Design a simple data-collection plan to answer this question: “Which part of the beach has the most litter?” State what will be recorded, what tool you will use and one way to make the comparison fair.