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Waldomaths applet - Java applet
Waldomaths video - video (c. 5m)
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Edexcel S1 (Statistics 1 - 6683)

Author and programmer: Ron Barrow


external Adobe Acrobat .pdf file Full course specification (Edexcel website)
external Adobe Acrobat .pdf file Mathematical formulae and statistics tables (Edexcel website)
external Adobe Acrobat .pdf file  Edexcel S1 (6683) Syllabus Specification (2008) (© Edexcel Ltd.)

Mathematical Models in Probability and Statistics

Mathematical Models in Probability and Statistics

Representation and Summary of Data

Histograms, Stem-and-Leaf Diagrams, Boxplots


Measures of location


Measures of dispersion


Skewness and outliers



Sample Space and Conditional Probability


Independence of Two Events


Tree and Venn Diagrams

Waldomaths video  Tree Diagrams 1 - Independent Events - video
Waldomaths video  Tree Diagrams 2 - Dependent Events - video
Waldomaths applet  Tree Diagrams 1
Waldomaths applet  Tree Diagrams 2
Waldomaths applet  Tree Diagrams 3

Correlation and Regression

Scatter Diagrams and Linear Regression

Waldomaths applet  Scatter Diagrams and Linear Regression

Explanatory (Independent) and Response (Dependent) Variables


Product-Moment Correlation Coefficient


Discrete Random Variables

Concept and Probability Function


Cumulative Distribution Function (c.d.f.)


Mean and Variance


The Discrete Uniform Distribution


The Normal Distribution

Using the Normal Distribution

Waldomaths applet  The Normal Distribution