4.1.13

Graphs & Charts

Test yourself

Graphs and Charts

We can draw graphs to make data easier to visualise. Graphs allow you to spot trends and patterns, and analyse your data.

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Types of graphs

  • You should use line graphs when:
    • Independent and dependent variables are continuous.
  • You should use bar charts for:
    • Categorical data
    • Discrete data
  • You should use pie charts for:
    • Percentage data
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Drawing a graph

  • You should draw your graph with a pencil.
    • You should also use a ruler.
  • Label each axis.
    • Include the units.
  • Label the axis with an appropriate scale.
    • The scale should cover as much of the graph as possible.
  • Draw plot points with an x.
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Lines of best fit

  • A line of best fit can be a smooth curve.
  • You don't always need a ruler to draw a line of best fit.
  • To draw a line of best fit:
    • Look from the bottom left of the graph.
    • Trace the pattern of the data from its starting point.

Jump to other topics

1Biology

1.1Cells, Tissues & Organs

1.2Reproduction & Variation

1.3Ecological Relationships & Classification

1.4Digestion & Nutrition

1.5Plants & Photosynthesis

1.6Biological Systems & Processes

2Chemistry

2.1Particles

2.2Chemical Reactions

2.3Atoms, Elements, Compounds

2.4The Periodic Table

2.5Materials & the Earth

2.6Reactivity

2.7Energetics

2.8Properties of Materials

3Physics

3.1Energy

3.2Forces & Motion

3.3Waves

3.4Electricity & Magnetism

3.5Matter

3.6Space Physics

4Thinking Scientifically

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