x

Typical value and spread

Ordered scores on a number line with a matching box plot labelled Q_1 = 18, median = 20, Q_3 = 22, and IQR = 4 When we describe data, we usually want one number for a typical value and one number for spread. Typical values include the mean and median, while spread can be shown by the range or the interquartile range.

Data Lesson

IGCSE
Maths
Data

Step-by-step lessons covering CIE IGCSE Maths Data for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.

Lessons

x

Typical value and spread

Ordered scores on a number line with a matching box plot labelled Q_1 = 18, median = 20, Q_3 = 22, and IQR = 4 When we describe data, we usually want one number for a typical value and one number for spread. Typical values include the mean and median, while spread can be shown by the range or the interquartile range.

Data Lesson

IGCSE
Maths
Data

Step-by-step lessons covering CIE IGCSE Maths Data for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.