Last week of September

Here is a big review assignment.  Two stamps.  Half due by Tuesday, half due Wednesday:

Unit I Review (starts on page 105):  #31, 32, 21 (with the outlier test for c), 29 (please add a boxplot), 26, 27, 25abcd, 5, 30f

Reminder:  Friday you have Project 1 due and your first extra credit assignment

Friday

We practiced the normalcdf problems from the "Old School" book.

Homework is Ch. 6 #27(a) & #28(ab) 

Wednesday

**We did in class:  Ch. 6 #3, 5 & 6

Tuesday, Sept. 19th

Today we went over ogives and changing data.  In class we did:

Ch. 5 #30, Ch. 6 #2
We also did the outlier check for #30

HW:  Ch. 5 #29, Ch. 6 #1

Monday!

Classwork:
Discussed quiz
Ch. 5 #5ab
Ch. 5 #27ab
Ch. 5 #35

Homework:
Ch. 5 #6, 7, 12, 19, 36, 41

Good Answer #14

      4-cylinder is skewed to the left, 6-cyl. is skewed right and 8 is symmetrical.

      4-cyl has a median around 32, 5-cyl. and 6 are at 21, 8 is even lower with a median mpg at around 18!

      The 4 cylinder has more variation, the 6 and 8 have less variation.  The IQR's are:  7, 4 and 2, respectively!

Note that the 6-cylinder has an outlier and there is only 1 car with a 5-cylinder engine.

Good Answer #13

Here's a good answer for Ch. 5 #13:

Both male and female distributions are skewed to the right.

Males have a median around 24, while females marry much younger at a median age of around 21!

The middle 50% of men goes from 23 to 26, while the middle 50% of women goes from 20 to 23.

The IQR of both groups is about 3!

The men marry so much older than the women, the third quartile of the women is about the first quartile of the men!

Thursday

Ch. 5 # 15, 16, 23, 25
Ch. 4 #30
Ch. 3 #19

Wednesday, Sept. 13

Do Ch. 5 #24

If you were not in class read about the outlier rule on pp. 60-61. 

Tuesday

Finish the quiz.  Add a segmented bar graph that shows gender distribution.

In class we made box plot and learned the vocab:

• Q1
• Q3
• IQR
• median

We also learned how to make a boxplot on our calculator (TI-Tip, page 63)

Monday, Sept 11

Get a parent signature
Ch. 4 #19, 20, 28

Thursday & Friday

On Thursday we took notes on Shape, Center & Spread from pages 39-42.  This vocabulary is crucial to CUSSing.  We also learned how to make a histogram on our calculator.  You can read the TI Tip in chapter 4 to help you with this.  Don't forget the TI Tip on page 11 is the first step in the process.

In class we have CUSSed for: 

• The sibling dotplot
• Ch. 4 #5
• Ch. 4 #7

We described the stemplot for Ch. 4 #11 (McGuire) and we hand-made a stemplot for #13

Homework for the weekend:  Ch. 4 #4, 6, 8, 12, 14

Sept. 6th

We took some very important notes about CUSSing:

Center
Unusual Features
Shape
Spread

We will explore this more on Thursday.

You have no official homework tonight, but you might want to read the article and summarize it for Friday.

Tuesday, Sept. 5th

Ch. 2 #14
Ch. 3 #22, 23, 30
Syllabus Quiz--study!

We discussed independence thoroughly today.  You should be able to justify independence vs. dependence using percents to back up your claim.

Friday, Sept. 1

Ch. 3 #15, 16 & 18
Your homemade die is due Tuesday as well!
Enjoy a much deserved 3-day break.
Chapter 2/3 quiz and syllabus quiz coming sooooon!
:o)