# Split tests

Skip this if you just want popups to show. A [proof tree](/docs/proof-trees) assigned to a page is enough.

Use a split test when you want stats, or when you want to randomly pick between proof trees and “none” (no popups).

## How it works

Set at least one proof tree, then choose how much percent you want for **None** — meaning no proof popups. Set None to 0 if you always want a tree. If you just want stats on one tree, use one tree and None at 0%.

If the totals are over 100%, those numbers are treated as weights. Example: None is 50 and two proof trees are 50 each. Each option then has a 50/150 chance of showing (one third, or 33.3%).

## Where a split test shows

Same three modes as a proof tree: **Selected Pages**, **Pages in These Categories**, or **All Except Selected Pages**.

For groups of pages (Heating vs AC), pick **Pages in These Categories**. See [Different proof on groups of pages](/docs/categories).

If a split test and a proof tree both match a page, the split test takes over.

## Stats

Views, link clicks, and form submits. After you start getting stats, click **Ignore Certain IPs** so your own visits do not count. Click **Ignore Current IP Address**, then **Add**.

Conversion % is clicks + form submits over views, including nav clicks.

## Caching

Your host’s cache can make a split look stuck. If it randomizes that you do get a popup, you may always see it, not 50/50, because of the cache. If it randomizes that you do not get a popup, you may not see it. Clear the cache in WordPress and it should reset.