*Cf*.*NRiC*, Chapter 14.## Statistics provides tools for understanding data.

- In the wrong hands these tools can be dangerous!

## Here's a typical data analysis cycle:

- Apply some formula to data to compute a "statistic".
- Find where value falls in a probability distribution computed on the basis of some "null hypothesis".
- If it falls in an unlikely spot (on distribution tail), conclude null hypothesis is
*false*for your data set.