Statistics & Probability

What is standard deviation?

A measure of how spread out data is from the mean. view more

How do you calculate probability?

Probability = favorable outcomes ÷ total possible outcomes Range: 0 (impossible) to 1 (certain) Examples: - Coin flip (heads): 1/2 = 0.5 = 50% - Die roll (any number): 1/6 ≈ 16.7% view more

What is the difference between mean and median?

Mean = average (sum ÷ count) Median = middle value when sorted Example: [1, 2, 3, 4, 100] - Mean: 22 - Median: 3 Median is less affected by outliers (better for skewed data). view more