This introduction covers Following the Journey of Data within Line Graphs for GCSE Mathematics. Revise Line Graphs in Statistics for GCSE Mathematics with 10 exam-style questions and 20 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 1 of 10 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
📈 Following the Journey of Data
You're tracking your progress in a fitness app, watching your daily step count climb from 3,000 steps in January to 8,000 steps in June. A line graph connects these data points with a smooth curve, telling the complete story of your fitness journey - not just where you started and ended, but how you progressed each month, including that dip in March when you were busy with exams. Line graphs are perfect for showing how things change over time.
Practice questions for Line Graphs
A time series graph is used to show:
A time series graph shows house prices from 2015 to 2023. A student extends the line to predict the house price in 2030. Explain why this prediction might be unreliable.