
Anyway, now that I've proved my gangsta capabilities (debatable) I will tell you the findings of a Chi Square probability test I ran during breakfast. (Because, remember, I'm cool.)
Basically and as is in the name, the Chi Square test tells us the probability of something happening purely by chance.
Now, out of the eight babies I wrote about last night, I learned that 6 were boys and only 2 were girls. I guess one would expect them to be 4 and 4.
x^2 = (2-4)^2 / 4 and x^2 = (6-4)^2 / 4
Which gives us x values of 1.00 and 1.00. If we plug it into our Chi Square table of critical values, however, we learn that our results are between 20 and 50%, which is awful (good results would be 5% or less. These results mean that there is some experimental error and it's not possible to get 6 and 2 purely by chance. Also, to run a good test, I should have 10 or more data points, so that may also be it), so I can only say that I fail to reject my null hypothesis. What does that mean? No idea, but I come to you with facts, that is all.
Happy studying!
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