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Time-Series Data Analysis

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Time-Series Data Analysis worksheet preview

Time-Series Data Analysis

Time-series graph illustration

📊 Part 1: Understanding Time-Series Data

1. What is time-series data?

Data collected at one point in time

Data collected over several time periods

Data about people's favourite colours

Data that never changes

2. Complete the table below by recording the mass of a carrot measured over 5 days:

Investigation: How does the mass of a carrot change when left in the sun?

Day Mass (grams)
Day 1 120g
Day 2 115g
Day 3 _______
Day 4 _______
Day 5 _______
3. Using the data from Question 2, draw a time-series graph below:

Remember: Put days on the x-axis and mass on the y-axis

4. Check all the features you can see in your graph:

The mass decreases over time

The mass increases over time

There are no unusual values (outliers)

The data shows a clear trend

🧮 Part 2: Calculating Mean and Range

5. Calculate the mean (average) mass of the carrot over the 5 days.

Use this data: 120g, 115g, 108g, 102g, 95g

Step 1: Add all the values together

120 + 115 + 108 + 102 + 95 = _______g


Step 2: Divide by the number of values (5)

_______ ÷ 5 = _______g


Mean = _______g

6. Calculate the range of the carrot mass data.

Range = Maximum value - Minimum value


Maximum value = _______g

Minimum value = _______g


Range = _______g

7. What does the range tell us about the data?

How much the carrot mass varied over the 5 days

The total mass of all carrots

Which day had the heaviest carrot

The average mass of the carrot

💭 Part 3: Interpreting and Reflecting

8. Describe the trend you can see in the carrot mass data:
9. Suggest one reason why the carrot's mass might change over time:
10. If Day 3 showed a mass of 130g instead of 108g, this would be called:

A normal reading

An outlier or anomaly

The mean

The range

11. Why is it important to check our data for errors when collecting time-series data?
12. Write one sentence to communicate your main finding from this carrot investigation:

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