Introduction to Research Design and Statistics

Distribution Shapes


Normal Distribution

Symmetric -- Mesokurtic

Normal Distribution

Symmetric -- Platykurtic

Normal Distribution

Symmetric -- Leptokurtic

Normal Distribution

Nonsymmetric -- Skewed Positive -- Skewed Right

Normal Distribution

Nonsymmetric -- Skewed Negative -- Skewed Left

Bimodal Distribution

Symmetric -- Bimodal

Examples of Kdensity and Normal Quantile Plots using real data

Graph

Graph

Graph

Graph

Graph


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Phil Ender, 30Jun98