The most important distribution in probability! It forms a symmetric bell-shaped curve, completely defined by its mean (ฮผ) and variance (ฯยฒ).
๐ Standard Normal (Z)
A special version of the normal curve where the mean is exactly 0 and the variance is 1. We use the famous Z-table to find its probabilities.
โจ Standardization
The magic trick! You can turn ANY normal variable X into a Standard Normal Z using the formula: Z = (X - ฮผ) / ฯ. This lets us solve any normal distribution problem.