<p>I'm actually doing this for AP Environmental Science, but it is apparently a good tool in studying natural selection. I have an x^2 Analysis table for data I collected from a lab. I calculated and summed the values between the expected (e) and observed (o) values using (o-e)^2/e and this total gives me the x^2 value. I'm not sure what I do from here. Here is my data:</p>
<p>Expected: 10 10 10
Observed: 24 6 0</p>
<p>My x^2 value was 31.2
Is my P = 0.75?</p>
<p>Do I converted 31.2 into 0.312 and get the square root of 0.312, and match that value with the P value on a "Probability of exceeding the critical value" table? The square root of 0.312 is 0.55857 (which is the Kramer Phi value, correct?)</p>
<p>Here's a link to what my lab looks like. Refer to the 2nd to last table labled "x^2 Analysis of Beetle Captures":</p>
<p>Thanks in advance for any help. Unfortunately, I was absent on the day we went over this and was not able to ask questions the next day because of a snow day. Feel free to ask me to clarify anything, I understand this is all jumbled.</p>