In normal data with a symmetrical bell-shaped curve, the mean is

4.5: The Normal Distribution - Mathematics LibreTexts

Normal Distribution and Standard Normal (Gaussian) - StatsDirect

Shapes of Distributions (skewed, symmetric bell-shaped, etc)

Normal Distribution

Explore the Visual Difference in Distributions with Varying Dispersion

СТРАТЕГИИ В УПРАВЛЕНИЕТО НА ФИРМАТА

Measures of the Center

СТРАТЕГИИ В УПРАВЛЕНИЕТО НА ФИРМАТА

Measures of the Shape of a Distribution - AnalystPrep