GCSE Secondary Maths Age 13-17 - Probability & Statistics: Cumulative frequency - Explained

The video tutorial covers cumulative frequency, starting with an introduction to frequency tables. It guides students through constructing a frequency table and plotting a cumulative frequency graph. The tutorial emphasizes avoiding common mistakes, such as plotting mid-values instead of end-values. It concludes with an analysis of a claim about parcel weights, demonstrating how to calculate percentages and verify claims using the graph.

What is the cumulative frequency for parcels weighing between 0 and 1 kilograms?

How many parcels were there between 0 and 3 kilograms?

What mistake do students commonly make when plotting cumulative frequency?

What is the cumulative frequency for parcels weighing less than 3.4 kilograms?

What is the total number of parcels mentioned in the text?

How do you convert the number of parcels to a percentage?

Explain the importance of plotting the end intervals from the frequency table.