Hello Guys,

We love to run experiments. We love to throw bold ideas at the wall to see if they stick, tinkering with different factors, and seeing how what happens can be incorporated into what we do every day. To us, it’s a very hot topic – we’re writing about it whenever we can, and trying to lift the curtain on what, behind the scenes, we’re cooking up on our own marketing team.

Thanks

I didn't find the right solution from the internet.
References:
- http://www.mlmdiary.com/forum/why-your-design-of-experiments-is-probably-wrong/113056
- Safety Equipment Video Examples.