GCSE Secondary Maths Age 13-17 - Probability & Statistics: Scatter Graph - Explained

The video tutorial explains how to analyze a scatter graph showing the relationship between the age and price of cars. It describes the concept of negative correlation and demonstrates how to use a line of best fit to estimate the price of a car based on its age. The tutorial emphasizes the importance of drawing a line of best fit for accurate data interpretation.

What does the horizontal axis represent in the scatter graph discussed?

• The price of the cars

• The age of the cars

• The number of cars

• The model of the cars

How is a negative correlation identified on a scatter graph?

• The points slope upwards

• The points form a vertical line

• The points slope downwards

• The points form a horizontal line

What is the relationship between the age of the car and its price?

• As the age increases, the price decreases

• There is no relationship

• The price remains constant

• As the age increases, the price increases

What tool is used to estimate the price of a car on the scatter graph?

• A calculator

• A compass

• A line of best fit

• A ruler

Why is it important to draw a line of best fit on a scatter graph?

• To count the number of data points

• To identify the model of the cars

• To estimate values accurately

• To make the graph look neat