2
Diagrammatic Summary of Two sample Tests Independent (unrelated) Samples Paired related) Samples Normal Populati on Non- Normal Populatio n Normal Populatio n Non- Normal Populati on 1 2 , 2 2 known 2 2 2 1 2 1 2 1 2 1 ) ( ) ( n n x x Z 1 2 , 2 2 unknown 2 1 2 1 2 1 1 1 ) ( ) ( n n S x x t p Mann-Whitney Rank Sum Test n s d t d ) ( 2 1 Two-Sample Sign Test Wilcoxon Signed Rank Test

Diagrammatic Summary of Two Sample Tests

Embed Size (px)

DESCRIPTION

two sample test

Citation preview

Page 1: Diagrammatic Summary of Two Sample Tests

Diagrammatic Summary of Two sample Tests

Independent (unrelated) Samples

Paired related) Samples

NormalPopulation

Non-NormalPopulation

NormalPopulation

Non-Normal Population

12, 2

2 known 2

22

1

21

2121 )()(

nn

xxZ

12, 2

2 unknown

21

2121

11)()(

nnS

xxt

p

Mann-Whitney Rank Sum Test

nsd

td

)( 21

Two-Sample Sign TestWilcoxon Signed Rank Test