You would get the data by making up a batch of cookies, baking some of them, and seeing if they taste the same as the unbaked ones (careful with this; if the dough contains raw egg, it could make you sick).
The conclusions and results would come from your observations about the taste of the cookies.
The vanilla might slightly affect the taste, but the baking soda and salt will affect the outcome of the cookies.
Baking powder in a recipe helps your item rise when baking.
some other similar experiments include= Does using Bed Head or Tea Tree shampoo affect how healthy my LOOKS? or maybe= Does using the internet or book affect the results you get on a question?
how does baking soda affect the hiegt of the balloon
EXPLOSION!
the vinger and baking soda mixed and inflated the ballon
how does the protein content of flour affect its baking qualities
well baking soda does not affect tap water but it does affect frozen or bolied water
it helps make a cake!
it won't really affect the taste. baking powder is used to help pastries/cookies rise, so the cookies just might be a little flat and hard.
How did temperature affect the cookie dough? Was any matter lost during baking?
i am not sure