PSY 120 Elementary Statistical Reasoning - Page 10

This class sounds horrific! I don't think I can take that plus a nursing class and work FT. I need to rethink this. :uhoh21:

I'm glad you 8 weekers are not having assignment problems like we are. Hopefully the computer grading glitches will be worked out before the next 5 week class starts.

@cincinursemary - I started to work on mod 9 and 10 (ours is combined as well) last night and didn't have it in me. Right from the beginning it was confusing and I decided to put it away and have a relaxing evening instead. I will try to tackle it a little bit today.
We are almost done!!!!!!!!!

Some of the mods were confusing and took considerable time and effort to figure out and complete while others were more simple and less time consuming. Personally, I would not want to take this class plus a nursing class, while also working FT. If I did, I'm sure there would be fits of rage where books get thrown around and filthy pirate language spewed. LOL! But that's just me. I'm sure there have been many people who have taken this course with another while also working and managed. Though I would assume that it was difficult.

Mtsteelhorse, I previously posted that I took this class with a nursing class and two non-nursing classes at the same time and it was hard to manage. I will still receive at least a B but I could have gotten an A much easier without the other classes. Some weeks I just had so much to do that I couldn't give statistics my all. I could not imagine doing it in five-weeks but the eight-week version or even a whole semester should truly not be as bad. The material is not as difficult as I had always pictured, but it does take time. I think you will do fine with the class.

Thanks for the encouragement on stats course. I would have to take the 5 week version I'm fairly sure. Is the 8 weeks course an option for everyone? I'm RN-BSN so not sure if I can...or maybe I can but it costs more than the 5 week option. I need to check. Thank you!

Screw it all together mtsteelhorse!!!! The decision has been made......

Take it starting in October with ME!!

I think taking this class over the course of a whole quarter/semester would be doable with another class and working. I may be wrong but I think the 8 week class was the normal quarter length class, but because of a shortened summer quarter it got shortened to 8 weeks.?? Am I making sense?

I am taking this course with Business Communications this summer. I was warned not to take stats with any other class by my adviser, but I thought since I am now part time I could handle it. I wanted to get them both out of the way like this so I could graduate earlier.
I worked out my course schedule until the end, and by doing this, I would get done sooner.
I am spending an enormous amount of hours on these courses. I study stats daily and I am still struggling in it. I am praying for a C so I don't have to take it over again. I am not sure why I am doing so poorly even though I am trying so hard, but my guess is because I am and always have been very poor at math. I took a prealgebra course 8 years ago, and I can honestly say that had I not taken that, I would have never been able to do this class. I didn't remember the math from way back then, but when I went to brush up on my algebra skills, I was able to recall it. Previously I had taken an algebra course 30 years ago; I had no recollection of it.
It seems too like all my mistakes are just dumb ones. One little error in the numbers can totally throw you off. The videos that this instructor has online have been a huge help to me. However I find this instructor's tests very tough.
As crazy as this sounds after saying all of that, I actually like this class; I find it interesting. I guess I just don't have that math aptitude like most people do and mess up with little things. I don't mean to scare anyone by my story; just keep in mind that like I said before I am extremely bad at math. I am just praying for a C!! One more weeek to go!!!

Started on mod 9 & 10 today. I haven't gotten very far into the packet and have been struggling. I found a few things online that made a lot more sense then what is presented in the book or notes and wanted to share them here.

DETERMINING BETWEEN ONE-TAIL OR TWO- TAIL
One tail = One that specifies the direction of a difference or correlation. For example -If we correlate income to the number of years in school we could hypothesize that years in school tends to make income increase. This specifies the direction of the difference, in this case positive ( more school means more money)

Two tail = One that does not speficy the direction of a difference of correlation. For example - If we were correlating people's heights with their income, we might have no good reason for expecting that the correlation would be positive (income increasing with height) or negative (income decreasing with height). We might just want to find out if there were any relationship at all, and that's a two-tailed hypothesis. Info taken from: Will That Be One Tail or Two?

DETERMINING CRITICAL Z AND CRITICAL T

Critical z - assuming that your alpha (weird greek lowercase letter a) is .05 and looking for a two-tail.
Step 1. Subtract alpha of .05 from 1.00 = .95
Step 2. Divide that number, .95 by 2 (2 tails) = .4750
Step 3. Look up .4750 "means to z" number in z tables. Then look at z score that corresponds to that mean to z number = 1.96 +

Critical z - with alpha of .05 and one-tail
Step 1. Subtract .05 from normal mean of 50 = .45
Step 2. Look up .45 "mean to z" number in z tables. Then look at z score that corresponds to that mean to z number = +1.65 or -1.65

Critical t - with n=25 alpha=.05 and two tails
Step 1. Figure degree of freedom which is normally always 1. Subtract degree of freedom from the n value. So 25-1=24
Step 2. Then look up that number, 24, on the t-table, under df.
Step 3. Then, from 24df, go over to your alpha number, .05, under two tails and you get + 2.064 -that's the answer to this one

Critical t - with n=25 alpha .01 and one tail
Step 1. Figure the degree of freedom (df) by subtracting 1 from the n value. So 25-1=24
Step 2. Look up 24 on the t-table under df. From there go over to your alpha number of .01 under one tail for the answer = +2.492 or -2.492

Hope this helps someone. I could not decipher this from the book.