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6 Cards in this Set
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Standardization

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


Z score formula

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

Applet results

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 

Comparing Areas of Normal vs Std.Normal Curve

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 

Find Area Process

1.Given xStandardizeUse Std.Norm TableArea
2.Given AreaUse std.norm tablefind zconvert to x 

Note

See practice questions for understanding problems
