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WS5 Question 5

*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: Wed, 26 Oct 2011 09:32:45 -0400

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL http://www.freestatistics.org/blog/date/2011/Oct/26/t1319636032q27ntr0kuhs5naj.htm/, Retrieved Mon, 20 May 2013 22:39:00 +0000

Original text written by user:

IsPrivate?
No (this computation is public)

User-defined keywords:
Part 1 - treatment E

System-generated keywords (parent):
t1319628788ukoocnu930cxol2 (pk = 136483)
Estimated Impact
29

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 2 seconds R Server 'George Udny Yule' @ yule.wessa.net

 Two Sample t-test (paired) Difference: Mean1 - Mean2 -0.3 t-stat -2.75716190086342 df 29 p-value 0.00998129981286201 H0 value 0 Alternative two.sided CI Level 0.95 CI [-0.522536403265861,-0.0774635967341389] F-test to compare two variances F-stat 1.21707128099174 df 32 p-value 0.596030021488084 H0 value 1 Alternative two.sided CI Level 0.95 CI [0.586134549517359,2.4945389374076]

 Welch Two Sample t-test (paired) Difference: Mean1 - Mean2 -0.3 t-stat -2.75716190086342 df 29 p-value 0.00998129981286201 H0 value 0 Alternative two.sided CI Level 0.95 CI [-0.522536403265861,-0.0774635967341389]

 Wicoxon rank sum test with continuity correction (paired) W 14 p-value 0.0140286306942676 H0 value 0 Alternative two.sided Kolmogorov-Smirnov Test to compare Distributions of two Samples KS Statistic 0.339393939393939 p-value 0.0535535045537597 Kolmogorov-Smirnov Test to compare Distributional Shape of two Samples KS Statistic 0.393939393939394 p-value 0.0152344169341024

Charts produced by software:
 http://www.freestatistics.org/blog/date/2011/Oct/26/t1319636032q27ntr0kuhs5naj/1hy1y1319635962.png (opens in new window) http://www.freestatistics.org/blog/date/2011/Oct/26/t1319636032q27ntr0kuhs5naj/1hy1y1319635962.ps (opens in new window) Click here to open pdf file.

 http://www.freestatistics.org/blog/date/2011/Oct/26/t1319636032q27ntr0kuhs5naj/2k5wx1319635962.png (opens in new window) http://www.freestatistics.org/blog/date/2011/Oct/26/t1319636032q27ntr0kuhs5naj/2k5wx1319635962.ps (opens in new window) Click here to open pdf file.

 http://www.freestatistics.org/blog/date/2011/Oct/26/t1319636032q27ntr0kuhs5naj/3b6lp1319635962.png (opens in new window) http://www.freestatistics.org/blog/date/2011/Oct/26/t1319636032q27ntr0kuhs5naj/3b6lp1319635962.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):