Lesson 15 of 16Article14 min
Intro to Data: Tables, Mean & Median
Organise values in a table or list. The mean is the fair-share average; the median is the middle after sorting. Outliers pull the mean more than the median.
First look at datasets
Organise values in a table or list. The mean is the fair-share average; the median is the middle after sorting. Outliers pull the mean more than the median.
- Mode: most frequent value (useful for categorical data too).
- Bar graphs for categories; line graphs for change over time.
- Always ask: who was measured, and what might be missing?
Full statistics comes later in Statistics Fundamentals — here you only build intuition.