Line Graphs
Line graphs display information as a series of data points called 'markers' connected by straight line segments. They are often used to visualize trends over time.
Avg. Time: 9 minutes per set
Difficulty: 7/10
Frequency: 15% of DI questions
About Line Graphs
Key characteristics and strategies for Line Graphs
Key Characteristics
- Data points connected by lines to show continuity
- Excellent for showing trends and patterns over time
- Can display multiple series for comparison
- Good for identifying rates of change and inflection points
Solving Strategies
- Identify the overall trend first (increasing, decreasing, fluctuating)
- Look for points of intersection between multiple lines
- Calculate rates of change between specific points
- Pay attention to the steepness of the line (indicates rate of change)
Common Mistakes to Avoid
- Misinterpreting the scale or units on the axes
- Overlooking changes in the rate of increase or decrease
- Not identifying important inflection points
- Making incorrect interpolations or extrapolations