Bell Statistics

Webinars

An hour with the people who build measurement systems for a living. Live, small enough to ask questions in, and recorded so you can send it to whoever needs convincing.

Coming up

Most measurement advice online is written to be agreed with. These sessions are not: they work through the cases where the standard answer is wrong, using data from real engagements, and they say plainly what each method can and cannot tell you. If you have ever been handed a dashboard claiming a 40% uplift and had no way to check it, this is the hour that fixes that.

Every session is run by someone who does this work rather than by someone who markets it. Expect notation to be introduced rather than assumed, arithmetic shown on real numbers, and at least one result that contradicts something you have been told — usually about statistical power or about what an incrementality test actually measures.

Registration is free and so are the recordings. If you cannot make the live hour, register anyway: the replay goes on the same page afterwards, and the calendar invitation we send is the only reminder you will get from us.

If a topic here matches something you are trying to measure, the calculators will get you a number today and the case studies show what the full version looks like.

Questions

Do the webinars cost anything?
No. They are free to attend and the recordings are free to watch, with no form in front of them. Registering gets you the calendar invitation and the joining link; the replay is on the page afterwards either way.
Will there be a recording?
Yes, on this page. It usually goes up within a few days of the session. Registering is still worth it if you cannot attend live — the confirmation email points at the page the recording will appear on.
How technical are they?
Pitched at somebody who has to read and argue about experiments rather than run the maths. Formulas appear, and every symbol is introduced before it is used. No statistics degree is assumed and none is needed.
Can I ask questions?
That is most of the value. The sessions are deliberately small and the last stretch is always questions — bring the specific thing you are trying to measure rather than a general one.

Need this for your own numbers?

A webinar covers the method. If you want it applied to your data, with a design and a result you can defend, that is what we do.