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*The author of this computation has been verified*
R Software Module: /rwasp_twosampletests_mean.wasp (opens new window with default values)
Title produced by software: Paired and Unpaired Two Samples Tests about the Mean
Date of computation: Fri, 28 Oct 2011 03:59:53 -0400

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL http://www.freestatistics.org/blog/date/2011/Oct/28/t13197887999e40ye7yjq5yv68.htm/, Retrieved Thu, 23 May 2013 11:33:48 +0000

Original text written by user:

IsPrivate?
No (this computation is public)

User-defined keywords:

System-generated keywords (parent):
(pk = 0)
Estimated Impact
19

Dataseries X:
» Textfile « » CSV « » Correlation Matrix « » Notched Boxplots «

Output produced by software:

Enter (or paste) a matrix (table) containing all data (time) series. Every column represents a different variable and must be delimited by a space or Tab. Every row represents a period in time (or category) and must be delimited by hard returns. The easiest way to enter data is to copy and paste a block of spreadsheet cells. Please, do not use commas or spaces to seperate groups of digits!

 Summary of computational transaction Raw Input view raw input (R code) Raw Output view raw output of R engine Computing time 1 seconds R Server 'Gertrude Mary Cox' @ cox.wessa.net

 Two Sample t-test (paired) Difference: Mean1 - Mean2 -0.111111111111111 t-stat -1.27589457900886 df 35 p-value 0.210395524095103 H0 value 0 Alternative two.sided CI Level 0.95 CI [-0.287902792253449,0.065680570031227] F-test to compare two variances F-stat 1.08026755852843 df 35 p-value 0.820631121275098 H0 value 1 Alternative two.sided CI Level 0.95 CI [0.550850737945888,2.11850128831743]

 Welch Two Sample t-test (paired) Difference: Mean1 - Mean2 -0.111111111111111 t-stat -1.27589457900886 df 35 p-value 0.210395524095103 H0 value 0 Alternative two.sided CI Level 0.95 CI [-0.287902792253449,0.065680570031227]

 Wicoxon rank sum test with continuity correction (paired) W 16.5 p-value 0.227272320646642 H0 value 0 Alternative two.sided Kolmogorov-Smirnov Test to compare Distributions of two Samples KS Statistic 0.111111111111111 p-value 0.97936311445764 Kolmogorov-Smirnov Test to compare Distributional Shape of two Samples KS Statistic 0.527777777777778 p-value 8.83123498954808e-05

Charts produced by software:
 http://www.freestatistics.org/blog/date/2011/Oct/28/t13197887999e40ye7yjq5yv68/1u70v1319788792.png (opens in new window) http://www.freestatistics.org/blog/date/2011/Oct/28/t13197887999e40ye7yjq5yv68/1u70v1319788792.ps (opens in new window) Click here to open pdf file.

 http://www.freestatistics.org/blog/date/2011/Oct/28/t13197887999e40ye7yjq5yv68/2g5ij1319788792.png (opens in new window) http://www.freestatistics.org/blog/date/2011/Oct/28/t13197887999e40ye7yjq5yv68/2g5ij1319788792.ps (opens in new window) Click here to open pdf file.

 http://www.freestatistics.org/blog/date/2011/Oct/28/t13197887999e40ye7yjq5yv68/3xdv71319788792.png (opens in new window) http://www.freestatistics.org/blog/date/2011/Oct/28/t13197887999e40ye7yjq5yv68/3xdv71319788792.ps (opens in new window) Click here to open pdf file.

Parameters (Session):
par1 = 1 ; par2 = 2 ; par3 = 0.95 ; par4 = two.sided ; par5 = paired ; par6 = 0.0 ;

Parameters (R input):
par1 = 1 ; par2 = 2 ; par3 = 0.95 ; par4 = two.sided ; par5 = paired ; par6 = 0.0 ;

R code (references can be found in the software module):