We started the day by looking at the graphs for both our M&M data, as well as the Starbucks data. Make sure you know how to plot data on your calculator, find the regression line, and understand how to put that information back into the context of the problem. This material WILL be on the midterm.
We discussed 4 different types of Variation: Direct, Inverse, Exponential, and Joint. Be sure that you know the equations and standard shape of these relationships. If you still have questions, check out the links to the right.
Have a great weekend!
GO HEELS!!! Check out Late Night With Roy at Tarheelblue.com this weekend
Coming up:
- Homework: pg. 109 #'s 9, 11, 12, 39-44, 68
- Midterm next week!
Posting for Points:
Which school will have the best college basketball team this year????? (There is only one answer)
Friday, October 12, 2007
Thursday, October 11, 2007
M&M Data
Today you guys split up into groups and took data on 10 fun size bags of M&M's. You should have taken data on several variables including: weight of bag, # of M&M's per bag, # of each color, etc.
In class you completed a set of questions dealing with the graph of the Weight vs. # in each bag, and found the regression line for this data. We will discuss this data tomorrow, and use the Starbucks data to create another plot.
Coming up:
- No Homework for tonight, unless you did not finish your Graph in class
- Midterm next week!
Posting for Points:
What does the correlation coefficient tell us about a graph?
In class you completed a set of questions dealing with the graph of the Weight vs. # in each bag, and found the regression line for this data. We will discuss this data tomorrow, and use the Starbucks data to create another plot.
Coming up:
- No Homework for tonight, unless you did not finish your Graph in class
- Midterm next week!
Posting for Points:
What does the correlation coefficient tell us about a graph?
Wednesday, October 10, 2007
Test (Transformations and Inverse Functions)
Today was your third test!! Hopefully everyone thought they did well! You will get them back as soon as everyone has taken the test.
Coming up:
- Tonight you should rework the problem that was one the board at the end of class
- Be sure you have your Starbucks data with you tomorrow (just the table)
Posting for Points:
What did you think of the test?
Coming up:
- Tonight you should rework the problem that was one the board at the end of class
- Be sure you have your Starbucks data with you tomorrow (just the table)
Posting for Points:
What did you think of the test?
Tuesday, October 9, 2007
MATHO and Test
Today we played a review game preparing for the Test tomorrow. Review all of your notes (library of functions, rules for functions/transformations, etc.) and be sure that you work out a few more problems. Also, as discussed in class, be sure to remember your parentheses when needed (especially when working with composite functions). DISTRIBUTE THE NEGATIVE!!! Email me or use the message board with any questions.
Good luck studying!
Coming up:
- Test tomorrow!!!
- Midterm next week! (We will talk about this on Thursday)
Posting for Points:
What do you think is the best way to study for a math test?
Good luck studying!
Coming up:
- Test tomorrow!!!
- Midterm next week! (We will talk about this on Thursday)
Posting for Points:
What do you think is the best way to study for a math test?
Friday, October 5, 2007
Mathematical Modeling
We spent the first part of class finishing up the "expert group" presentations and answering any questions about the test material. Be sure that you correct and review all of these problems for your test Wednesday.
After the "expert groups" we introduced Mathematical Modeling, the process of analyzing and interpreting data. We learned the process for graphing statistical data, as well as finding the Linear Regression line for any set of points. Remember, when looking at a linear regression line you use the correlation coefficient to determine how exact your line fits the given data. The closer to 1, the better the fit. If you need a review of how to graph this data on the calculator click the link to the right.
For this weekend you need to do some research on the exponential growth of the Starbucks franchise. You should use the link on the right and navigate through until you find the Company Timeline. Read over the timeline as it gives interesting information. As you go through the information create a table of growth since the first franchise. Your first year will be 1971 when the first Starbucks opened in Seattle. Start this year as 0, and continue up from there. Notice that there will not be a number for every year, so only include what is given in this timeline. We will use this data next week!
After the "expert groups" we introduced Mathematical Modeling, the process of analyzing and interpreting data. We learned the process for graphing statistical data, as well as finding the Linear Regression line for any set of points. Remember, when looking at a linear regression line you use the correlation coefficient to determine how exact your line fits the given data. The closer to 1, the better the fit. If you need a review of how to graph this data on the calculator click the link to the right.
For this weekend you need to do some research on the exponential growth of the Starbucks franchise. You should use the link on the right and navigate through until you find the Company Timeline. Read over the timeline as it gives interesting information. As you go through the information create a table of growth since the first franchise. Your first year will be 1971 when the first Starbucks opened in Seattle. Start this year as 0, and continue up from there. Notice that there will not be a number for every year, so only include what is given in this timeline. We will use this data next week!
Coming up:
- Homework: Create a table of values for the year and # of Starbucks stores at the end of that given year.
- Test will be Wednesday October 10th!
Posting for Points:
Where was the first Starbucks? Are you a Starbucks fan?
- Homework: Create a table of values for the year and # of Starbucks stores at the end of that given year.
- Test will be Wednesday October 10th!
Posting for Points:
Where was the first Starbucks? Are you a Starbucks fan?
Thursday, October 4, 2007
Test Review
Today we reviewed the material that will be on your test this coming Wednesday. Please remember that this test will be cumulative!
Tomorrow we will begin looking at new material that will not be expected for the test.
Coming up:
- Test on Wednesday October 10th
- "Midterm" coming up on October 17th
Posting for Points:
What does it mean if you find the fog and gof of two functions to both equal "x"?
Wednesday, October 3, 2007
Inverse Functions
Today we went over your assignment from page 99, dealing with inverse functions. We got through most of the assignment but will begin tomorrow by completing problem #24. You should rework this problem before class. Remember that there are two methods for solving these problems, and in situations like #23 and #24 you should use the gof and fog methods as discussed in class. If you were not in class please refer to the book for examples (pg. 93-99).
I have decided that the test will be moved to WEDNESDAY, October 10th. Please begin studying now because we will move on to new material starting Monday!
Coming up:
- TEST: Wed. October 10th (remember that the test is cumulative)
- No Homework, but begin studying!
Posting for Points:
What is the BEST method for determining if one given equation is the inverse of another inverse equation?
I have decided that the test will be moved to WEDNESDAY, October 10th. Please begin studying now because we will move on to new material starting Monday!
Coming up:
- TEST: Wed. October 10th (remember that the test is cumulative)
- No Homework, but begin studying!
Posting for Points:
What is the BEST method for determining if one given equation is the inverse of another inverse equation?
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