Data Distributions
📋 What it is
A distribution shows how data is spread out — clustered in the middle, skewed to one side, or spread wide.
🗣️ Coach says
A distribution is the SHAPE of your data. Many things (like heights) pile up in the middle — the famous "bell curve". Others lean to one side (skewed). Reading the shape tells you what’s typical and what’s unusual.
🧠 Memory hook
The SHAPE is the story: bell = piled in the middle; skewed = leaning one way; spread = wide range.
😂 Giggle
Why was the median so calm during arguments?
It always took the middle ground!
😲 Whoa!
Human heights, test scores, and even the size of coffee foam bubbles all tend to form the same bell-shaped curve.
✅ Quick check: Data that piles up around a central value and thins out on both sides has what famous shape?
Say your answer out loud first — then reveal.
A bell curve (normal distribution).
The symmetric "pile in the middle, tails on the sides" shape is the bell curve.
🧪 Try it! (2 minutes)
Measure the height (in cm) of 8 people or objects and sketch a rough dot plot. Does it pile in the middle?