Guides ยท Math
Statistics for Everyday Decisions Basics
Use simple stats to avoid bad conclusions
This guide builds everyday statistics intuition: mean vs median, variability, outliers, correlation vs causation, and how sample size affects reliability of conclusions.
- statistics
- mean
- median
- variance
- sample size
Mean vs median
Median is more robust to outliers; mean can be pulled by extreme values.
Variability matters
Two averages can be identical but spread can differ; look for ranges and standard deviation.
Correlation is not causation
A relationship between variables does not prove one causes the other.
Sample size and noise
Small samples swing more; treat strong claims from tiny samples cautiously.
Keep Exploring
Guides
Interpreting Statistics
Statistics become more useful when you read averages, spread, sample size, and uncertainty together instead of in isolation.
Why it matters
Numeracy
Numeracy is the practical ability to read numbers, compare claims, and make better everyday decisions.
Guides
Mental Math Techniques
Mental math gets easier when you break numbers apart, round strategically, and reuse familiar patterns.
Guides
Understanding Probabilities
Probability becomes more intuitive once independence, uncertainty, and expected value are tied to real decisions.