Finding the Modal Class and Completing a Cumulative Frequency Table

The video tutorial explains how to analyze a table of money spent by families on holidays. It covers identifying the model class, completing a cumulative frequency table, plotting a cumulative frequency graph, calculating the interquartile range, and estimating the number of families spending more than a specified amount. The tutorial emphasizes accuracy in plotting and calculations to ensure correct results.

What should you do if your cumulative frequency total does not match the expected value?

Explain the significance of the cumulative frequency graph in this context.

What are the marks allocated for correctly plotting the cumulative frequency graph?

What is the estimated number of families that spent more than £450 on holiday?