CRO Statistics: Reading Significance the Right Way

A test result only counts if it is real. Statistical significance is how you tell a genuine lift from random noise, and getting it wrong is the most expensive mistake in CRO.

Holding results to proper significance is part of every conversion optimisation programme we run. We report honest results for businesses across Brisbane and Canberra.

What significance really tells you

Statistical significance estimates how likely a result is down to chance. A significant result means the difference you measured is unlikely to be random, so you can trust the direction of the lift.

Why early results lie

In the first days a test bounces around as small numbers swing the rate. Calling a winner early is like judging a coin after three flips. The pattern only settles with enough data.

Knowing when to call it

Decide the sample size and run length before you start, then let the test reach them. A result is ready when it has enough data, covers a full cycle and clears your significance threshold.

Set your stopping rule before the test goes live. Deciding when to stop while watching the results is how noise gets shipped as signal.

Key takeaways

Frequently asked questions

How quickly can TPR Media start a CRO programme?

Most CRO engagements begin within one to two weeks once analytics and goals are confirmed. Contact our Brisbane team on (07) 3184 9197 for a current schedule.

Where is TPR Media based?

TPR Media operates from Level 34, 1 Eagle Street, Brisbane City QLD 4000, serving clients across Brisbane and Australia-wide.

TPR Media holds CRO tests to proper statistical significance, setting sample size and run length in advance so reported wins are real rather than random noise.