Question $29$

only ONE best answer should be selected.

Which of the following statements about A$/$B testing is NOT correct?

External factors $($e$.$g$.,$ sales, holidays, etc.$)$ must be considered in $\frac{A}{B}$ testing.

When running an $\frac{A}{B}$ testing, cultural differences should not be ignored.

We should not send too little or unbalanced traffic to variations in $\frac{A}{B}$ testing.

Running multiple $\frac{A}{B}$ tests at the same time is not a good idea.

We do not need to test the statistical significance when we run $\frac{A}{B}$ testing.