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1. HISTOGRAMS Representing Data
OCR Module 9
2. Why use a Histogram When there is a lot of data
When data is
a mass, height, volume, time etc
Presented in a Grouped Frequency Distribution
usually in groups or classes that are UNEQUAL
6. Grouped Frequency Distribution
7. Drawing Sensible Scales
Bases correctly aligned
Plot the Class Boundaries
8. Frequency Densities
10. How do we treat ages?