GRAPHS AND STATISTICS

Line Graphs

Learn the reliable method for line graphs, then apply it to 11+ exam-style questions.

1 · WHAT YOU NEED TO KNOW

The idea

Data diagrams must be read using their title, labels, key and scale.

Picture itRead the scale before the bars
2 · THE METHOD

Follow these steps

  1. Read the title, key and axis intervals first.
  2. Extract only the required values.
  3. Perform the requested comparison or calculation and retain the data unit.
3 · WORKED EXAMPLES

See the method in action

Example 1

What was the mean daily reading time?

  1. The readings are 12, 17, 27, 22, 32 minutes.
  2. Add all five times and divide by five.
  3. The answer is 22 minutes.
Answer: 22 minutes
Example 2

The pupil aims to read for 150 minutes during these five days. How many more minutes are needed?

  1. The readings are 16, 21, 31, 26, 36 minutes.
  2. Subtract the current total from 150.
  3. The answer is 20 minutes.
Answer: 20 minutes
4 · ELEVENSPRINT TIP

A useful shortcut

Perform the requested comparison or calculation and retain the data unit.

5 · COMMON MISTAKES

Watch out for these

6 · TRY IT YOURSELF

Three fresh questions

Ready to check the method? You will get three fresh, validated questions.