Due to the PSAT, the test for Chapters 5-6 is on Friday, NOT on Wednesday as previously scheduled.

If you forgot to pick up a worksheet after the test, here it is:

• 4 Worksheet – Home Sales Ogive.pdf

Don’t forget the 9 problems from the book (7 of them are odds).

On the calendar, it lists page 132 #11 as one of the problems to choose from.  Since chapter 5 is *not* going to be covered on this test, you should perhaps skip this problem and choose 4 others.

I *did* recommend that everyone give #28 on page 317 consideration :)

Today we covered the rest of chapter 4, which completes the unit for the upcoming quiz and test (which covers chapters 13, 3, and 4).

Here’s the powerpoint from today (most of this stuff is in the book):

• 4 Student Notes – Numerical Data Part 2 of 2.ppt

And here are three worksheets, two of which are homework:

• 4 Worksheet – Dot Plots Challenger O-ring data.pdf (finish for HW)
• 4 US Presidents.pdf (we made a back-to-back stemplot in class – this is NOT HW… example of this is in the powerpoint)
• 4 Worksheet – Ogives.pdf (we did side #1 in class… the other side was homework)

In addition to the two worksheets, you still have the bookwork assigned on the calendar for homework #10.

**Ogives Worksheet Update**: 

Looks like there are a few things I forgot to explain.  Don’t worry about them, but if you’re curious:

• Interquartile Range: The difference between the 75th percentile and the 25th percentile.
• Mid-range: (min value + max value)/2.