Applied Math 40S March 24, 2008

1,660 views

Published on

Working with z-scores using modified and standard normal distribution; understanding and applying the invNorm() command on the TI-83 calculator.

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,660
On SlideShare
0
From Embeds
0
Number of Embeds
486
Actions
Shares
0
Downloads
22
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Applied Math 40S March 24, 2008

  1. 1. Working with z-scores and the Normal Curve ... it's everywhere! Green House by the Laundry by Dylan James
  2. 2. The Standard Normal Distribution The normal distributions used up to this point have all been non- standard normal distributions. This means that the mean and standard deviation of the distribution are the mean and standard deviation of the data being studied. In a standard normal distribution, the scale on the x-axis is the z-score (a standard score) where 'z = 0' is the mean, and the standard deviation is '1'. The distribution is a probability distribution where the area under the curve = 1. This means there is a 100 percent chance of every score being included in this distribution. Other probabilities are illustrated below.

×