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Time-Series Data Worksheet

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Time-Series Data Worksheet

Time-series data is collected in time order to show how something changes. Use the data displays to investigate a week of weather and a changing stream count. Answer every question; for open-ended questions, give a sensible example.

The week’s weather

A weather station recorded the afternoon temperature in Dunedin for five days.

Day

Temperature (°C)

Monday

Tuesday

Wednesday

Thursday

Friday

1.Which statement best describes time-series data?

Measurements collected from different groups at one moment
Measurements collected over time and arranged in time order
A list of names sorted alphabetically
One measurement with no date or time

2.Which two investigations would produce time-series data?

Favourite sports of 30 people surveyed today
The number of bikes passing a crossing each hour on Monday
Weekly rainfall in Nelson over a month
The shoe sizes of a football team

3.Use the temperature table. Which day was warmest, and what was the temperature?

4.How many degrees warmer was Friday than Thursday? Show the subtraction you used.

5.Between which two consecutive days did the biggest temperature change occur? State the size and whether it rose or fell.

Stream-watch challenge

A conservation group counts eels seen at the same stream lookout at 8 am each day. The count is a simple way to track sightings, not a count of every eel in the stream.

Day

Eels seen

Monday

Tuesday

Wednesday

Thursday

Friday

6.What was the total number of eel sightings across the five days?

7.Write one pattern you notice in the eel sightings. Use at least two values from the table as evidence.

8.The group wants to compare sightings fairly each day. Which plan is best?

Count at the same lookout and same time each day, and record the date
Count at a different stream every day and choose any time
Only record days when many eels are seen
Ask visitors to guess how many eels live in the stream

9.Suggest a respectful way to collect information if people are included in a time-series investigation, such as daily counts of visitors to a community garden.

10.Design a one-week time-series investigation about something observable at home or outdoors. State your investigative question, what you will measure, when and how often you will measure it, and one way to keep the data fair or respectful.