Blake Ferguson
2/11/2015 10:47:40 pm
The part to me that is most confusing is writing the hypotheses for two-proportion significance tests. I get confused with the greater-than and less-than for the alternative hypothesis. On the other hand, the part that I know best is confidence intervals and one proportion significance tests because they tend to be fairly straight-forward.
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olivia wagg
2/11/2015 10:52:21 pm
are you on any good pain meds?
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Freeman
2/12/2015 02:19:46 am
I have a hard time understanding the context of the question for example number 3 on the last chapter test gettin the zscofe was simple through the calculator yet taking the problem a step further and understanding that that the problem is two sided on the normal curve rather than one sided
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Thames Hudlow
2/12/2015 02:20:02 am
I have a problem with understanding what answers different tests give you., and how everything is related. Specifically, number 5 on the 20-22 test. I couldn't put together exactly what the appropriate answer would be with the given information. Ironically, I am really good at putting together a conclusion for confidence intervals and the other tests when I work out the problem, like on an FRQ.
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Thames
2/12/2015 02:22:14 am
And I also suck at studying which is probably why I failed
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Becca Hendrix
2/12/2015 03:27:26 am
I think that my biggest problem is knowing how to interpret the confidence level. I understand what it means, but when it comes to the test, I have trouble putting it into words.
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Emily Bradshaw
2/12/2015 03:30:33 am
I have trouble identifying type 1 and type 2 error and using them in conceptual problems on the test. I understand the basic definitions but it's hard for me to apply them to specific problems.
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Young Joo Choi
2/12/2015 04:44:26 am
The most confusing part for me is that the z-score shifts around even when the confidence level stays the same. Since the confidence doesn't change, I would expect the z-score to stay the same, but it differs from one-sided to two-sided models. The part that I am most comfortable with is the calculator portion (plug-and-chug) and interpreting the confidence interval & level (only a specific script applied in context).
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Erika Bowen
2/12/2015 10:18:50 am
Pshhh - You don't have to worry about anything >.> You're going to cure cancer and receive the Nobel Peace prize. The last thing you should worry about are plug and chugs.
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mimi
2/12/2015 06:17:11 am
I find that the most difficult thing for me to do is to figure out what is really being asked on the multiple choice questions. Many times the language of the problem will distract me from what is really being asked. However, the thing I struggle the least with is the FRQ's because you're basically just writing what you know in the context of a problem or situation. Also, calculations such as normalcdf and invnorm are fairly easy to me.
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Nicolette Mehran
2/12/2015 06:39:02 am
One of my biggest issues is fully understanding what a p-value actually is. I can repeat the definition to myself so many times, but I haven't quite been able to cement into my head that not only is it the probability of specific results occurring again, given that the null hypothesis is true, but also that it relates to the strength of evidence generated from the significance tests. However, my strengths involve being able to easily follow the processes of PANIC and PHANTOM because that's just how my brain works; I can memorize and follow processes and scripts with ease. Plus, it's spelled out for me, so there isn't much to think about whilst doing the problem.
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Madison Clayborn
2/12/2015 06:44:03 am
I think the hardest part for me is figuring out what the multiple choice questions are asking.. Once I hear you explain it I understand it, but on a test I feel like sometimes the wording confuses me so I'm not sure how to work the problem. The easiest part for me is doing PHANTOM on the FRQs. Since I have it memorized and I have a script for the conclusion, I can work those problems pretty easily because they're more straightforward.
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Jessica Yager
2/12/2015 08:36:54 am
The most difficult thing for me is figuring out the alternative hypothesis for any problem and also interpreting the P value in my conclusion. I know how to calculate the P value, but when it comes to understanding what it means in context of the problem, I get confused. I feel the easiest thing for me to understand is PHANTOM And how to use it in free responce questions.
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Karley
2/12/2015 09:05:37 am
I struggle with knowing how p-value and z-scores and intervals all relate together. I understand how to find z-scores and p-values and how they relate to the problem. I feel overwhelmed and it is so hard trying to remember everything and then I get confused and think too hard so I also struggle with relaxing :) I'm confident in my conclusions and phantom and panic.
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2/12/2015 09:20:39 am
The section that continuously puzzles me is the one that pertains to distinguishing between problems that require the discovery and usage of the Z-Score and the T-Score. It seems as if we have used the Z-Scores of -1.645 and 1.645 as boundaries on all of the sample problems that we have worked through. Another concept that has been a challenge for me if fully understanding the contents of the acronym, PHANTOM. But this review video and note sheets have aided me in better understanding this. One thing that we have done that is not an issue for me is discovering the Null and Alternative Hypothesis'. I find it easy do to the fact that the problem states their values and all that needs to be done is interpreting their correlation.
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Christine
2/12/2015 10:04:17 am
The hardest thing for me is writing the conclusion and the interpretation of the confidence level itself. I tend to try and memorize the script of how to phrase it, but don't really grasp the concept of how it's formed.
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Erika Bowen
2/12/2015 10:15:48 am
To be honest, It's the math part that confuses me which sounds so ignorant because this is a math class, but let me explain. For example, (what seems to be) simple math problems like finding the "n" using the equation for marginal error is what seems to be what I'm missing ("plug-n-chug" problems). What comes naturally for me are FRQs and short answer which is the only reason why I haven't flunked this class let's be real.
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Caleb Moore
2/12/2015 11:18:19 am
I have a hard time understanding when to reject the null if the alpha level is not given. Of course it's easy to see when the null is given and the p value is less than such, but when it's not given I'm lost.
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Mackenzie Epps
2/12/2015 12:10:32 pm
I have found that the most difficult questions for me on each test are those that ask for the correct combination of options out of three (or multiple) statements. I have learned that it is critical to evaluate the wording of each statement and to not hastily pick those that initially sound correct. For example, on the last test, one of the statements was incorrect because although margin of error CAN be decreased by a larger sample size, it is not REQUIRED. It is important to pay attention to words that denote absolute statements, which should usually be avoided.
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Alexus Murray
2/13/2015 01:05:03 am
The hardest part in all of this to me is the multiple choice questions. Mr. Wig you're super slick sometimes. I cant stand the questions where you ask "Which of the following are true?" I honestly never know. The difference between a parameter and a statistic always got me as well. I feel like overall using "PHANTOM" and "PANIC" isn't hard. It's just when I get to the questions on the test and they are worded differently it throws me off. You want us to apply what we know and I cant. the study guides have nothing to do with the test if we are being real. Type 1 error and Type 2 error used to confuse me as well until Karley taught me an easier way in which she explained above. Overall im getting better Mr. Wig. :)
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Alexus Murray
2/13/2015 01:16:53 am
The material I know best is the conclusion in context
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Zach McMurry
2/13/2015 01:49:35 am
I have a hard time determining if facts are sometimes true, never true, or always true on the questions with two or three statements. I do try to test the statements but sometimes I mess up and get the wrong outcome (false when it should be true). It is very difficult to me to come up with a scenario where something true can be false also. On the other hand, I do feel like I am able to complete most all short answer fairly easily.
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Brandon Morales
2/13/2015 11:53:40 am
The hardest thing for me is interpreting and finding the right words to describe just P-values a confidence interval, etc. themselves with context. I enjoy working through PHANTOM and PANIC; I find understanding it and going through it fairly easy.
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Garrett Jordan
2/13/2015 11:55:18 am
I feel like I can get the basic structure of all the concepts and can somewhat apply them together, which is good; however, I am bad when the problem goes into very specifics and I feel like I would have to understand the concept/process inside and out to find the answer.
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Garrett Jordan
2/13/2015 11:59:12 am
Also, I feel like I make a lot of dumb mistakes/ careless errors.
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Chandler Lasha
2/18/2015 01:58:47 am
The hardest thing that I have trouble with is making a conclusion when I'm interpreting a p value in the context of a problem. My strongest area is comparing intervals such as in a 2 proportion z-test.
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CS
2/18/2015 01:58:59 am
I struggle most with understanding what exactly the confidence level is in context
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CS
2/18/2015 02:00:57 am
However I'm best at stating the assumptions and conditions in both PHANTOM and PANIC problems
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alley franklin
2/18/2015 08:27:48 am
For starters, the central limit theorem confuses me somewhat. I am just trying to understand how it relates to the data and what we are talking about. Does it just let us know if the sample is large enough? The other objective I have a trouble grasping is distinguishing between a parameter and a statistic. In chapter 19, my main issue is remembering the formulas and knowing when and how to use them to solve problems. I felt like I understood chapter 20-22 when I was reading and taking notes from the book( which was a rarity, but it happened I swear) however I did not do well on the test. I do not fully understand how to know when a hypothesis is one sided or two sided.
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