Linear Interpolation 11.03.08

Today we learned how to do a different way of computing numbers that aren't on the "z table".

Notes:
Figure out how to compute whats going on at the point 1.65.




We know the z table values for both points 1.6 and 1.7.




With knowing those points, we use them to determine the value of 1.65

In this picture above, you can see the points 1.6 and 1.7 on the curve as well as the point we want to know. We connected the two known points with a straight line, which is the same as the point found between the two points on the curve.

z table values:

1.6 = 0.8904

1.7 = 0.9109

Now we take these two points z table values to compute the value for 1.65 as follows:

(0.8904 + 0.9109) / 2 = 1.8013 / 2 = 0.90065 -----> z value for 1.65

"This technique will work to find most points not on the z table" - Mr. Marchetti

Things done in class:

1. learned about linear interpolation
2. go over HW9
3. Classwork: A Normal Poll
4. Mean and Standard Deviation of Probability Distribution

Homework:

1. POW Revisions
2. Quiz on Wednesday (up through HW7)
3. Homework 10 (just introductory) and Read pg 410 both due on Thursday
4. POW: The Knights Switches due November 10

Next Scribe: Drew