x

Typical value and spread

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

  1. IGCSE
  2. /Maths
  3. /Data

Step-by-step lessons covering Oxford AQA IGCSE Maths Data for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) format. Since content from any part of the specification can appear on either paper, keep number and algebra fluency sharp throughout the course rather than leaving it until near the exam.

Lessons

Reverse PercentagesStandard FormSpeed and DensityChanging the Subject of a FormulaExpanding and Factorising QuadraticsSolving QuadraticsDrawing Quadratic GraphsSimultaneous EquationsSimilar Shapes (Lengths)SOHCAHTOA (Trigonometry)Venn DiagramsData