Test Review - Monday and Tuesday

The test is WEDNESDAY (2B and 3B) and THURSDAY (1A) of THIS WEEK.

Today (and tomorrow) you continue to work on whichever review pages you have chosen.

IN ADDITION, I have made a review pack that is VERY MUCH like the test. It is not required, however, it is worth 30 points towards your review grade.

Here is the answer key to that review:

Review, day 2

Today we looked at:

(1) Computing 1-variable statistics, making plots, and figuring out what happens to the mean and standard deviation when you add a new data point in (sheet 1D):

and,
(2) Using the Empirical Rule to decide whether a set of data should be considered a NORMAL DISTRIBUTION or not (sheet 6D):

Review for quiz/(small) test

Your "quest" (bigger than a quiz, but smaller than a normal test) will be Wednesday March 11 (2B and 3B) or Thursday March 12 (1A).

Yesterday and today we started the "Make your own review" work. You will continue working on this in my class AND in Ms. Wilson's class through this week and Monday/Tuesday if needed.

Here's the cover sheet. Remember to use it to keep track of which sheets you've completed - you can't get points for the same sheet more than once, after all!

You need to get 100 points in all. I would STRONGLY suggest trying some of everything!

We did sheet 3D in class, which is worth 4 points:

And, we started the z-score sheet (worth 20 points!) together, and most people finished it in class:

I will add more pages here if we work them together.

I am keeping track of completed (correct) pages. If you finish a page in Ms. Wilson's class, you MUST show it to me to get the points!!!

How do the MEAN and STANDARD DEVIATION change if you have new data values?

Today we looked at how the mean and standard deviation change if you have new data values.

Here are the notes for the mean:

and for the standard deviation:

SUMMARY:

• If the NEW VALUE is HIGHER than the original MEAN, the MEAN will INCREASE.

 

• If the NEW VALUE is LOWER than the original MEAN, the MEAN will DECREASE.

 

• If the NEW VALUE is BETWEEN the values of the mean minus the standard deviation and the mean plus the standard deviation, the STANDARD DEVIATION will DECREASE.

 

• If the NEW VALUE is NOT BETWEEN the values of the mean minus the standard deviation and the mean plus the standard deviation, the STANDARD DEVIATION will INCREASE.

ASSIGNMENT: 

Complete this page (done in class unless absent). The first is done as an example, below. See me if you need a copy of this.

After that was done, we worked on the practice from last time (the packet labeled "Z-Score"). Please continue working in that packet, in support class; it will be a grade.
  

Probability

Notes for Wednesday March 4 (1A) and Thursday March 5 (2B and 3B)

First, how to find the probability using the GRAPH of the NORMAL CURVE:

• The PROBABILITY of a value being LESS THAN  some given number:

• The PROBABILITY of a value being BETWEEN two given numbers:

• The PROBABILITY of a value being MORE THAN some given number:

Next, how to calculate the Z-SCORE:

And finally, how to use find the probability using the Z-TABLE or the CALCULATOR:

(Remember for the calculator: [2nd] [VARS] [2], then the LOWER, the UPPER, the MEAN, and the STANDARD DEVIATION.)