This is further to my post on calculator statistics.

If the calculator also stores the six values , and , then it can calculate the linear regression to a parabola.

The initial state (for the empty data set) has:

.

Given a new point where is the frequency and/or weight, these values are updates thus:

Best fit (minimum square vertical offsets) parabola or quadratic :

, and ;

where

;

;

;

.

### Like this:

Like Loading...

*Related*

This entry was posted on Tuesday, 28 April 2009 at 22:55 and is filed under Mathematical Statistics, Mathematics, Research. You can follow any responses to this entry through the RSS 2.0 feed.
You can leave a response, or trackback from your own site.

## Leave a Reply