HSC Together Year 12 Maths Standard: Constructing a Bivariate Scatterplot

#### Maths Standard

• Simultaneous Linear Equations
• Non-linear Relationships
• Non-Right Angled Trigonometry
• Rates and Ratios
• Investments and Loans
• Annuities
• Bivariate Data Analysis
• The Normal Distribution
• Network Concepts
• Critical Path Analysis
• Back to other subjects
Back to other subjects

# Constructing a Bivariate Scatterplot

### What is Bivariate Scatterplot?

Bivariate Data is simply data that has two variables, a dependent and an independent variable. Sometimes when we are given data, we find that there is a correlation between two variables, such as the score they achieve on a test and the amount of hours they spent studying.

Scatterplots are used to determine whether such a correlation exists by mapping out the points on the graph. In order to construct a bivariate scatterplot you need to:

1. Draw a number plane
2. Label your x-axis (horizontal) with the independent variable and draw an appropriate scale.
3. Label your y-axis (vertical) with the dependent variable and draw an appropriate scale.
4. Plot the data from your table onto the graph and see if there is a correlation between them!

### How do you draw a Scatterplot?

The following video explains how to construct a bivariate scatterplot in more detail!

The following video provides an example of how to construct using a HSC example!

The following video explains the concept of dependent and independent variables further, however, takes a scientific approach. Nevertheless, they are the same by definition.

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