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Unit 4 - Appropriate Chart/Graph
Why are charts and graphs used to present data? Find out in this quiz!

Unit 4 - Appropriate Chart/Graph

In GCSE Biology you meet lots of data. Knowing which chart or graph to choose helps you show relationships and patterns clearly.

Explore the Topic →
(quiz starts below)

Fascinating Fact:

In a line graph, the independent variable is placed on the x axis and the dependent variable on the y axis. This helps to show how changing one factor affects the other.

In GCSE Biology, you often collect results from experiments. Choosing an appropriate chart or graph makes patterns clearer, helps you spot trends, and lets you communicate your conclusions accurately in exams and coursework.

Key Terms

  • Independent variable: The factor you deliberately change in an experiment, usually shown on the x axis of a graph.
  • Dependent variable: The factor you measure, which changes in response to the independent variable and is plotted on the y axis.
  • Line graph: A graph that plots points and joins them with lines to show how one continuous variable changes as another changes.

Frequently Asked Questions (click to see answers)

Which graph should I use for GCSE Biology results?

Use a line graph when both variables are continuous, such as time and temperature. Use a bar chart when you compare categories, such as different plant species or treatments.

How do I label axes correctly on a GCSE Biology graph?

Put the independent variable on the x axis and the dependent variable on the y axis. Each axis needs a clear label with units, such as “Time / minutes” or “Rate of reaction / cm³ s?¹”.

Why is choosing the right type of graph important in exams?

Choosing the right graph helps examiners see patterns quickly and shows that you understand your data. It can also earn marks in questions about presenting and interpreting results.

Try These Related Quizzes

Please click on any of the smaller images below to get a larger picture.
1 .
What sort of chart is this?
Pie chart
Line graph
Bar chart
Scatter graph
Each bar is a different group of data
2 .
Points just plotted without joining or bars is known as a ...
scatter graph
line graph
pie chart
bar chart
Scatter graphs are useful for spotting patterns in data
3 .
Using this pie chart, showing the composition of the human body, which of the following is the body mainly made of?
Photograph courtesy of JenCom at Wikimedia Commons
Protein
Fat
Carbohydrate
Water
All humans are about 70% water!
4 .
This shows the population of a country as time goes on. The population is...
increasing
decreasing
the same
increasing and decreasing
It is drawn as a line graph because the population is known at any given time
5 .
Identify this type of chart.
Line graph
Bar chart
Histogram
Scatter graph
You can join the points in a line. Hence line graph
6 .
In the following pie chart, which has the largest percentage?
Photograph courtesy of Optigan13 at Wikimedia Commons
MSM
MSF
IDU
Other
Pie charts are great for showing percentages
7 .
Looking at this histogram of the height of cherry trees, why is this a histogram and not a bar chart?
Photograph courtesy of Jtneill at Wikimedia Commons
Height is continuous data
Height is discontinuous data
The data is averaged
The data is accurate
Discontinuous data is presented in a bar chart
8 .
This is an example of which type of chart?
Line graph
Histogram
Bar chart
Pie chart
Looks like the pieces of a pie! Each piece represents a percentage of the pie. Half of the pie would be 50%
9 .
This chart is a type of...
bar chart
line graph
mean
data
In a true bar chart, there is a gap between each bar but you would not be penalised for missing out the gap in an exam or coursework
10 .
Looking at this line graph covering a 12-hour period, which hour shows the highest amount?
3
5
7
11
Line graphs usually have a jagged appearance
You can find more about this topic by visiting BBC Bitesize - Practical skills

Author:  Donna Davidson (GCSE Biology Teacher & Examiner, Quiz Writer)
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