# 09_29 - STAT 400 Examples for 09/29/2011 Fall 2011 1....

This preview shows pages 1–2. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: STAT 400 Examples for 09/29/2011 Fall 2011 1. Consider the following data set: 14.0 27.7 21.1 25.0 21.7 27.3 26.5 15.7 22.2 23.5 14.4 21.2 13.3 18.7 Construct a q- q plot, N ( , 1 ) percentiles versus the data ( normal probability plot ). k x p = k / 15 z 1 13.3 0.0667 – 1.50 2 14.0 0.1333 – 1.11 3 14.4 0.2000 – 0.84 4 15.7 0.2667 – 0.62 5 18.7 0.3333 – 0.43 6 21.1 0.4000 – 0.25 7 21.2 0.4667 – 0.08 8 21.7 0.5333 0.08 9 22.2 0.6000 0.25 10 23.5 0.6667 0.43 11 25.0 0.7333 0.62 12 26.5 0.8000 0.84 13 27.3 0.8667 1.11 14 27.7 0.9333 1.50 ___________________________________________________________________________ EXCEL: = NORMSDIST( z ) gives P( Z ≤ z ) = Φ ( z ) = NORMSINV( p ) gives z such that P( Z ≤ z ) = p = NORMDIST( x , μ , σ , 1 ) gives P( X ≤ x ), where X is N( μ , σ 2 ) = NORMDIST( x , μ , σ , ) gives f ( x ), p.d.f. of N( μ , σ 2 ) = NORMSINV( p , μ , σ ) gives x such that P( X ≤ x ) = p , where X is N( μ , σ 2 ) ___________________________________________________________________________ ___________________________________________________________________________...
View Full Document

## This note was uploaded on 11/07/2011 for the course STAT 400 taught by Professor Kim during the Fall '08 term at University of Illinois, Urbana Champaign.

### Page1 / 4

09_29 - STAT 400 Examples for 09/29/2011 Fall 2011 1....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online