How to Describe Trends and Changes in Line Graphs

Line graphs provide valuable insights into trends over time, showcasing how data changes can signify broader patterns. Whether you’re identifying gradual increases, sudden shifts, or sharp declines, mastering the language of trends will enhance your writing and clarity. In this article, we’ll explore various methods for describing trends, including how to highlight significant changes and compare data points, ensuring you’re well-prepared to tackle this part of the exam.

Key Descriptive Methods for Analyzing Trends in Line Graphs

Below is a summary of key descriptive methods that can help you articulate different types of changes, such as gradual increases, sudden spikes, and sharp declines. In addition, I put a line graph with sample data here to be referred by the summary table.

Description Method

Identify the main trend over time

Frequently Used Words/Collocations

“Overall,” “In general,” “The trend shows”

Example

Overall, the trend shows a steady increase in visitors from 2015 to 2022.

Description Method

Describe periods of increase

Frequently Used Words/Collocations

“Gradually rise,” “Sharp increase,” “Steady growth”

Example

From 2015 to 2016, the number of visitors gradually rose from 150,000 to 180,000.

Description Method

Describe periods of decrease

Frequently Used Words/Collocations

“Sharp decline,” “Significant drop”

Example

In 2020, there was a sharp decline to 250,000 visitors.

Description Method

Discuss variations in data

Frequently Used Words/Collocations

“Fluctuate,” “Volatile,” “Oscillate”

Example

Visitor numbers fluctuated between 300,000 and 400,000 over the years.

Description Method

Compare specific points in time

Frequently Used Words/Collocations

“In comparison,” “Compared to,” “While”

Example

In comparison, the number of visitors in 2017 was 67% higher than in 2015.”

Description Method

Identify highest and lowest points

Frequently Used Words/Collocations

“Peak,” “Trough,” “Reaching a maximum/minimum”

Example

The number of visitors peaked in 2022 at 500,000.

Description Method

Discuss the speed of changes

Frequently Used Words/Collocations

“Increased by X%,” “Decreased by Y%,” “Fold increase”

Example

From 2016 to 2017, the number of visitors increased by 67%.

Conclusion

Remember to identify overall trends, highlight significant changes, and use precise vocabulary to convey your analysis effectively. Incorporating terms for gradual increases, sharp declines, and sudden transitions will enrich your descriptions and improve coherence in your writing.

Appendix: Line Graph Writing in IELTS Authentic Practice Tests

learning@ieltswriting.org

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With 20 years of experience in IELTS English teaching and an IT enthusiast.

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