Saturday, January 22, 2011

Assignment #9- Reflection and Goals

1. I feel that my performance and approach to this class for the past semester has been good. I've got to admit, I've been procrastinating a little and leaving reading for the last minute but I always get all my homework done and pay attention during class, which I feel has helped me a lot. I've done alright on tests and quizzes with the exception of one chapter. Lately the material has been more difficult so I've tried to put more time into this class.
2. Next semester I plan on reading the book before we go over it in class and doing a little of review on my own for the AP test. I actually didn't expect this class to be so difficult but I'm not considering getting out of it, because I would have to explain that to colleges, so I'll just stay in Awesome Pretty Stats and try to do better next semester.

Saturday, December 11, 2010

Assignment #8- Data Sets

a) The name of the data set link I chose is 25,000 Records of Human Heights (in) and Weights (lbs) and is under "Population Data"
b)The data set contain a Growth Survey of 25,000 children from birth to 18 years of age, obtained from Maternal and Child Health Centers. It has the weight an height of the 25,000 children.
c)The thing that we needed to understand from the data set was: How does weight relate to height and age?  

Saturday, December 4, 2010

Assingment 7- SOCR Website

After playing around with the website I found the "Distributions" tab interesting. What I liked about this function is that you can see how a distribution graph will look like if the mean or standard deviation change and you can also see how a variety of different distributions look like by choosing them from the list under SOCR Distributions.
This feature will be useful in the classroom because it gives us an example of what the different distributions look like under different conditions, like an increase in the mean or standard deviation.

Wednesday, November 24, 2010

Assignment # 6- Elections

My source is cnn.com

 Jerry Brown- 4,552,290 votes- 53%
  Meg Whitman- 3,571,675 votes- 42%
Who: Jerry Brown 
What: Won the 2010 California Elections
When: November 2
Where: California
How: by getting almost a million more votes than Meg Whitman


The source was not entirely accurate because only 86% of the results were reported for their calculations, the other 14% could have made a difference


Additionally the source had percentages for race, sex and income of voters who voted Republican and Democrat but I don't see how this could help the original report because they only  used percentages and not the total amount of voters which could have helped us figure out the real amount of people who voted for each candidate.


My only concern with this data is that only 86% of the actual data was taken into account. This could have lead to some bias to a candidate since not all the data is taken into account; maybe Meg Whitman had an advantage in the resting 14% of the data.

Saturday, October 30, 2010

Assignment #5- Pairing up

The three people I would consider working with are Sarah, Carlos and Raul.
 Sarah is a hard worker and always has a positive attitude and a smile on her face. 
 Carlos has a nice personality and is responsible so I know I could rely on him if we were to do a group project.
 Raul understands the material and is not afraid to ask questions so he would be help me understand the concepts. 

Sunday, October 17, 2010

Assignment #4- The Book's Website

1. my favorite part about the website was that it breaks up the chapters and has a quiz for every chapter. to take the quiz all you need to do is click on "online quizzes" which is under student resources and register. Registering was pretty easy, just write down your email and teacher's email.
 The "Statistical Applets" was another helpful application of this website because it explains the purpose of different data and how its used.
The statistics on the web was very helpful as well because it gives you external links and shows what statistics is being used in out in the real world

Saturday, October 9, 2010

Assignment #3- Correlation

1. Correlation is important because it shows the relationship between two variables and how strong this relationship is. From a positive correlation we can see that both variables increase at the same time. From a negative correlation we see that one variable decreases as the other increases.
2. Correlation and regression has helped my life so far by showing me the relationship between homework and grades, they increase mutually :)
3.Correlations that have made an impact on my life are the amount of time i spend on fb v. the amount of work i get done because ice seen that the more time i spend on fb the less work i get done :/