<p>How do I memorize all the conditions for everything? There are so many.</p>
<p>Ex:
One proportion Z-test
Assumption:
-individuals are independent
-sample is sufficiently large
Conditions
-SRS
-population>10n
-np>=10,nq>=10</p>
<p>And there are all the other tests...</p>
<p>Sit Down tomorrow and memorize this</p>
<p>One proportion Z-test
Assumption:
-individuals are independent
-sample is sufficiently large
Conditions
-SRS
-population>10n
-np>=10,nq>=10</p>
<p>Two proportion z-test
Assumption:
-groups are independent
-data in each group is independent
-both groups are large
Condition:
-SRS
-population>10n for each group
-np>=10,nq>=10, each group</p>
<p>One Sample T-test
Assumption:
-individual independent
-population is normal
Conditions:
-n>30;Central Limit Theorem
-SRS
-population>10n</p>
<p>Two-Sample T-Test
Assumption:
-groups are independent
-individuals are independent
-both populations are normal
Condition:
-both group are normal;CLT
-SRS
-population>10n for each group</p>
<p>Matched Pair T-Test
Assumption:
-data are matched
-individuals are independent
-population of differences is normal
Conditions:
-difference is normal;CLT
-SRS
-all>10n</p>
<p>Goodness of Fit Chi-Square Test
Assumption:
-data are counts
-data are independent
-sample is large
Condition:
-SRS
-all>10n
-all expected counts>=5</p>
<p>Homogeneity Chi-Square Test
Assumption:
-data are counts
-data are independent
-sample is large
Condition:
-SRS
-all>10n
-all expected counts>=5</p>
<p>Independence Chi-Square Test
Assumption:
-data are counts
-data are independent
-sample is large
Condition:
-SRS
-all>10n
-all expected counts>=5</p>
<p>Regression Test
Assumption:
-Form of linearship is linear
-errors are independent
-variability of a errors is constant
-errors have a normal
Conditions:
-Scatterplot looks approximately linear
-no apparent pattern in residuals plot
-residuals plot has consistent spread
-histogram of residuals is approximately normal</p>
<p>(errors being data)</p>
<p>Program everything into your calculator. Seriously.</p>
<p>novademon:</p>
<p>I’ve heard of that, but how do I do it? Preferably quickly.</p>
<p>It’ll take you probably an hour maximum. Go to PRGM, over to NEW. And create one called “STAT” and just write all the information you need. You don’t really need to actually program it, and when you want to access it during the test, go over to EDIT under PRGM and just read the info off of there.</p>
<p>I thought for a 1 sample T-test, n < 30 is also acceptable. How do you justify using this test for small sample sizes?</p>
<p>actually, the general form of ALL of the confidence intervals ARE ACTUALLY GIVEN on the exam. the pattern is there. all you have to do is understand what it means…take a look at the formula sheet. you’ll see a great resemblence.</p>
<p>novademon, is it cheating to do this and then look at the formulas during the test?</p>
<p>Of course not. I did it last year. Proctors have no way of knowing. If they wanted to ban you from even thinking of this, then they should have banned all TI-83 calculators from AP examination. </p>
<p>People have been doing this for all sorts of exams, physics, chemistry, calculus, etc.</p>
<p>awesome, thanks</p>
<p>If you were allowed to bring in a sheet of important material in the test with you, what would you all bring? Anything besides the conditions sheet?</p>
<p>PS: The condition sample<10%population has never been in the scoring guidelines in the AP Stats FRQ questions on CB. Did anyone else realize this?</p>
<p>boxplot question: <a href=“http://www.kent.k12.oh.us/~ke_bmccombs/apstatsl/Exam%20review/2008%20released%20exam.PDF[/url]”>http://www.kent.k12.oh.us/~ke_bmccombs/apstatsl/Exam%20review/2008%20released%20exam.PDF</a></p>
<p>Look at the answer for free response 1. I thought boxplots only had one axis, yet this has two: one is labeled “Variable.” Do you really have to do this and what is the significance of it?</p>
<p>
</p>
<p>If you have to say this, then it’s probably somewhat cheating…</p>
<p>Also, how many digits do you show after the decimal point? In the previous post, the answers showed 7 for the FRQ… yet I thought it was only 3.</p>
<p>Actually it is cheating
My teacher read off this thing on friday saying
“it is not only unethical, but cheating for students to store any notes in their calculator…the only thing allowed in addition to basic functions are upgrades to make their calculators up to speed (e.g. TI-83 getting catalog help)”</p>
<p>but then again…its not really unethical if everyone does it</p>
<p>all the conditions are so alike anyway. Why not just memorize them? There are only a few differences.</p>