Lesson # 12

Front 1

Standardization

Back 1

Is the process of converting an x value from a normal distribution into a z score (units oflength sigma from the center mu)

Front 2

Z score formula

Back 2

z=(x-mu)/sigma
Z score reports how many std.dev an x value lies from the mean and in which direction.

Front 3

Applet results

Back 3

1.Decreasing mu increasing area to left of z
2.Increase x increase in area to left of z score
3.sigma increase widens the graph

Front 4

Comparing Areas of Normal vs Std.Normal Curve

Back 4

1. Area to right of z score=Area to right of x value
2.Area to left of z score=Area to left of x value

Front 5

Find Area Process

Back 5

1.Given x--Standardize--Use Std.Norm Table--Area
2.Given Area--Use std.norm table--find z--convert to x

Front 6

Note

Back 6

See practice questions for understanding problems