Statistics & Data Analysis

How to work through it

1. For statistics topics, always ask: what question is the data answering?
2. Make a quick dot plot or histogram on paper when the walkthrough shows one.
3. Mean, median, and mode need different situations, know which to use.
4. Read graphs twice: title, axes, then values.
5. Practice exercises build graph literacy, don't skip them.

You should be able to

• •Compute mean, median, and mode for a data set.
• •Describe shape, center, and spread of data informally.
• •Interpret dot plots, histograms, and box plots.
• •Identify what a statistical question is asking.

Extra practice links