Describing Nominal and Ordinal Data

Descriptive versus Inferential Statistics

Some possible descriptions of a data set.

All Numbers Are Not Equal

Scales of Measurement

Sometimes a number is just a name or a category
Sometimes a number tells us the order of events
Sometimes we can add and subtract numbers
Some numbers can be multiplied and divided
Seeing Clearly with Nominal Data
It's time to begin learning to see better
Using graphs and charts
Bar chart
Pie chart
Seeing Clearly with Ordinal Data
First, Second, Third: I see a pattern