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What Users Want, A/B testing explained [Devoxx ...

What Users Want, A/B testing explained [Devoxx Ukraine 2018]

We all would like to know what users want, right? Then we could build it and get a lot of money for it.
But how to find out without being psychic, can we ask them ?

The worst thing you can do is build the wrong thing. But how to know what is right and what is wrong? We don't have a crystal ball. Is our gut feeling the best we can do ?

Join me while I take you on a trip behind the scene of some of the most successful website in the world. I will share their secret with you. How they made it happen, how they decide what to build, when to build and how to make sure that it is what the users want. And of course how they made their fortune in the process of doing this.

Vladimir Dejanovic

November 23, 2018
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  1. @VladimirD_42 @devoxxua Yes No A A_Yes A_No A_Total B B_Yes

    B_No B_Total Total Total_Yes Total_Num
  2. @VladimirD_42 @devoxxua Yes No A A_Yes A_No A_Total B B_Yes

    B_No B_Total Total Total_Yes Total_No Total_Num
  3. @VladimirD_42 @devoxxua Expectations Ex_A_Yes A_Total * Total_Yes / Total_Num Ex_A_No

    A_Total * Total_No / Total_Num Ex_B_Yes B_Total * Total_Yes / Total_Num Ex_B_No B_Total * Total_No / Total_Num
  4. @VladimirD_42 @devoxxua G-Test 2 * ( A_Yes * log(A_Yes /

    Ex_A_Yes) + A_No * log(A_No / Ex_A_No) + B_Yes * log(B_Yes / Ex_B_Yes) + B_No * log(B_No / Ex_B_No) )