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

The video tutorial covers a higher mathematics paper from 2018, focusing on a calculator paper. It emphasizes careful reading and planning, using a highlighter for key information. The tutorial explains scatter diagrams, types of correlation, and how to identify outliers. It uses examples of Kristina and Debbie to illustrate outlier identification and the limitations of using graphs for predictions outside the data range.

What is the primary tool emphasized for use in the 2018 higher mathematics paper?

• A compass

• A calculator

• A protractor

• A ruler

What type of correlation is shown when the points on a scatter diagram slope downwards?

• Negative correlation

• No correlation

• Positive correlation

• Zero correlation

Why is Kristina's point considered an outlier on the scatter diagram?

• It is the lowest point on the graph

• It is far from the line of best fit

• It follows the trend of other points

• It is the highest point on the graph

What does the scatter diagram primarily show in the context of the video?

• The relationship between height and weight

• The relationship between age and running time

• The relationship between weight and running time

• The relationship between age and height

What is the main reason Debbie cannot use the scatter diagram to predict her running time?

• The graph does not show any trend

• Her age is within the range of the graph

• The graph is not labeled correctly

• Her age is outside the range of the graph