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Grade 11

Variance, Standard Deviation & Data Representation

Master the logic of dispersion — why we square deviations, how to calculate variance and standard deviation by hand and from frequency tables, how to read ogives, compare datasets, detect outliers, and interpret skewness — with full worked examples.

The Exponential Graph (Grade 11)

Master exponential growth and decay, the horizontal asymptote, sketching, finding the equation, and understanding why the graph behaves the way it does — with full worked examples.