graph
Definition
A graph is a visual representation of data. It is a diagram that shows how two or more quantities are related to each other. The quantities are usually represented by points on a grid, and the lines connecting the points show how the quantities change together.
There are many different types of graphs, but some of the most common include:
- Line graphs show how one quantity changes over time.
- Bar graphs show how different quantities compare to each other.
- Pie charts show how a whole quantity is divided into different parts.
- Scatter plots show how two quantities are related to each other, but there is no clear line connecting the points.
Graphs are a very useful way to communicate data. They can be used to show trends, compare different things, or make predictions.
In addition to the two axes, graphs also have a title and labels for the axes. The title tells you what the graph is about, and the labels tell you what the numbers on the axes mean.
Graphs are a powerful tool for understanding data. They can help us to see patterns that we might not be able to see otherwise. They can also help us to compare different sets of data and to make predictions about the future.
How can the word be used?
The scientist graphed the data to see if there was a correlation between the two variables.
Different forms of the word
Noun: graph.
Adjective: graphical.
Verb: to graph.
Synonym: chart, diagram.
Etymology
The word "graph" comes from the Greek word "graphein", which means "to write" or "to draw". The word was first used in English in the 17th century to refer to a diagram or chart that shows the relationship between two or more variables.
Question
What is a graph useful for?
AQA Science Exam Question and Answer
Question:
What is a graph and how is it used in science?
Answer:
A graph is a visual representation of data. It shows the relationship between two or more variables. The variables are plotted on the axes of the graph. The x-axis is the independent variable, and the y-axis is the dependent variable.
Graphs are used in science to represent and analyse data. They can be used to:
- Show trends in data.
- Identify relationships between variables.
- Make predictions.
- Communicate findings.
There are many different types of graphs, each with its own strengths and weaknesses. The most common types of graphs used in science are:
- Line graphs.
- Bar graphs.
- Pie charts.
- Scatter plots.
Line graphs are used to show trends in data over time. Bar graphs are used to compare data between different categories. Pie charts are used to show the parts of a whole. Scatter plots are used to show the relationship between two variables.
Here are some additional points that could be included in the answer:
- The axes of a graph should be labelled clearly.
- The data points should be plotted accurately.
- The trend of the data should be clear.
- The relationships between the variables should be clear.
- The graph should be easy to read and understand.