S1 Representation and Summary

Part of S1

Objectives

Using histograms, stem and leaf diagrams and box plots to compare distributions
Back-to-back stem and leaf diagrams may be required
Measures of location (mean, median, mode)
Drawing simple inferences and give interpretations to measures of location and dispersion
Data may be discrete, continuous, grouped or ungrouped
Understanding and use of coding
Measures of dispersion (variance, standard deviation, range and interpercentile ranges)
Simple interpolation
Interpretation of measures of location and dispersion
Skewness
Concepts of outliers. Location of outliers on a box plot