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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_Tests to Compare Two Means.wasp
Title produced by softwareT-Tests
Date of computationThu, 31 May 2012 10:26:41 -0400
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2012/May/31/t1338474430gzh1d9o1q2xwmaz.htm/, Retrieved Mon, 06 May 2024 11:23:11 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=168090, Retrieved Mon, 06 May 2024 11:23:11 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact145

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Histogram, QQplot and Density] [Female weight des...] [2012-05-30 09:46:42] [bee56a896f26c17646228a77f17a2aff]
- R  D  [Histogram, QQplot and Density] [Male weight descr...] [2012-05-30 09:54:00] [bee56a896f26c17646228a77f17a2aff]
- RMPD    [T-Tests] [Weight and RepWei...] [2012-05-31 12:59:56] [bee56a896f26c17646228a77f17a2aff]
- R  D      [T-Tests] [Weight and RepWei...] [2012-05-31 14:24:15] [bee56a896f26c17646228a77f17a2aff]
-    D          [T-Tests] [Weight and RepWei...] [2012-05-31 14:26:41] [c60080e90d514f19ee1378b89a456a2a] [Current]
-    D            [T-Tests] [Height and RepHei...] [2012-05-31 14:28:34] [bee56a896f26c17646228a77f17a2aff]
-    D              [T-Tests] [Height and RepHei...] [2012-05-31 14:30:47] [bee56a896f26c17646228a77f17a2aff]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
54	58
55	56
56	58
57	58
59	61
61	61
62	66
62	64
63	63
64	65
65	64
65	66
65	67
65	64
65	66
66	70
66	66
66	68
66	67
67	67
68	70
68	69
68	68
69	73
69	69
69	70
69	70
69	71
69	73
69	68
70	75
70	68
70	70
71	71
71	71
71	76
71	68
73	74
74	73
74	71
75	73
75	70
75	76
76	76
76	77
76	75
76	75
76	75
77	77
78	80
78	77
79	76
79	79
79	81
80	80
80	76
80	78
81	82
82	85
83	83
83	84
83	80
84	86
84	90
85	82
85	83
87	89
88	86
88	87
88	86
88	93
89	86
90	91
90	91
92	101
96	94
96	95
97	98
101	100
102	107
103	101
119	124
79	81

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'AstonUniversity' @ aston.wessa.net
R Framework error message
The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'.

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input & view raw input (R code)  \tabularnewline
Raw Output & view raw output of R engine  \tabularnewline
Computing time & 1 seconds \tabularnewline
R Server & 'AstonUniversity' @ aston.wessa.net \tabularnewline
R Framework error message & 
The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'.
 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=168090&T=0

[TABLE]
[ROW][C]Summary of computational transaction[/C][/ROW]
[ROW][C]Raw Input[/C][C]view raw input (R code) [/C][/ROW]
[ROW][C]Raw Output[/C][C]view raw output of R engine [/C][/ROW]
[ROW][C]Computing time[/C][C]1 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'AstonUniversity' @ aston.wessa.net[/C][/ROW]
[ROW][C]R Framework error message[/C][C]
The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'.
[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=168090&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=168090&T=0

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'AstonUniversity' @ aston.wessa.net
R Framework error message
The field 'Names of X columns' contains a hard return which cannot be interpreted.
Please, resubmit your request without hard returns in the 'Names of X columns'.






T-Test
Difference: Mean1 - Mean2-0.60241
T Statistic-2.21398
P-value0.02961
Lower Confidence Limit-1.14369
Upper Confidence Limit-0.06113

\begin{tabular}{lllllllll}
\hline
T-Test \tabularnewline
Difference: Mean1 - Mean2 & -0.60241 \tabularnewline
T Statistic & -2.21398 \tabularnewline
P-value & 0.02961 \tabularnewline
Lower Confidence Limit & -1.14369 \tabularnewline
Upper Confidence Limit & -0.06113 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=168090&T=1

[TABLE]
[ROW][C]T-Test[/C][/ROW]
[ROW][C]Difference: Mean1 - Mean2[/C][C]-0.60241[/C][/ROW]
[ROW][C]T Statistic[/C][C]-2.21398[/C][/ROW]
[ROW][C]P-value[/C][C]0.02961[/C][/ROW]
[ROW][C]Lower Confidence Limit[/C][C]-1.14369[/C][/ROW]
[ROW][C]Upper Confidence Limit[/C][C]-0.06113[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=168090&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=168090&T=1

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

T-Test
Difference: Mean1 - Mean2-0.60241
T Statistic-2.21398
P-value0.02961
Lower Confidence Limit-1.14369
Upper Confidence Limit-0.06113






Standard Deviations
Variable 112.08657
Variable 212.22136

\begin{tabular}{lllllllll}
\hline
Standard Deviations \tabularnewline
Variable 1 & 12.08657 \tabularnewline
Variable 2 & 12.22136 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=168090&T=2

[TABLE]
[ROW][C]Standard Deviations[/C][/ROW]
[ROW][C]Variable 1[/C][C]12.08657[/C][/ROW]
[ROW][C]Variable 2[/C][C]12.22136[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=168090&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=168090&T=2

As an alternative you can also use a QR Code:  
QR Code


The GUIDs for individual cells are displayed in the table below:

Standard Deviations
Variable 112.08657
Variable 212.22136


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = two.sided ; par2 = 1 ; par3 = 2 ; par4 = T-Test ; par5 = paired ; par6 = 0.0 ; par7 = 0.95 ; par8 = TRUE ;
Parameters (R input):
par1 = two.sided ; par2 = 1 ; par3 = 2 ; par4 = T-Test ; par5 = paired ; par6 = 0.0 ; par7 = 0.95 ; par8 = TRUE ;
R code (references can be found in the software module):
par2 <- as.numeric(par2)
par3 <- as.numeric(par3)
par4 <- as.character(par4)
par5 <- as.character(par5)
par6 <- as.numeric(par6)
par7 <- as.numeric(par7)
par8 <- as.logical(par8)
if ( par5 == 'unpaired') paired <- FALSE else paired <- TRUE
x <- t(y)
if(par8){
bitmap(file='test1.png')
(r<-boxplot(x ,xlab=xlab,ylab=ylab,main=main,notch=FALSE,col=2))
dev.off()
}
load(file='createtable')
if( par4 == 'Wilcoxon-Mann_Whitney'){
a<-table.start()
a <- table.row.start(a)
a <- table.element(a,'Wilcoxon Test',3,TRUE)
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'',1,TRUE)
a <- table.element(a,'Statistic',1,TRUE)
a <- table.element(a,'P-value',1,TRUE)
a <- table.row.end(a)
W <- wilcox.test(x[,par2],x[,par3],alternative=par1, paired = paired)
a<-table.row.start(a)
a<-table.element(a,'Wilcoxon Test',1,TRUE)
a<-table.element(a,W$statistic[[1]])
a<-table.element(a,round(W$p.value, digits=5) )
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')
}
if( par4 == 'T-Test')
{
T <- t.test(x[,par2],x[,par3],alternative=par1, paired=paired, mu=par6, conf.level=par7)
a<-table.start()
a <- table.row.start(a)
a <- table.element(a,'T-Test',3,TRUE)
a <- table.row.end(a)
if(paired){
a <- table.row.start(a)
a <- table.element(a,'Difference: Mean1 - Mean2',1,TRUE)
a<-table.element(a,round(T$estimate, digits=5) )
a <- table.row.end(a)
}
if(!paired){
a <- table.row.start(a)
a <- table.element(a,'Mean1',1,TRUE)
a<-table.element(a,round(T$estimate[1], digits=5) )
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'Mean2',1,TRUE)
a<-table.element(a,round(T$estimate[2], digits=5) )
a <- table.row.end(a)
}
a <- table.row.start(a)
a <- table.element(a,'T Statistic',1,TRUE)
a<-table.element(a,round(T$statistic, digits=5) )
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'P-value',1,TRUE)
a<-table.element(a,round(T$p.value, digits=5) )
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'Lower Confidence Limit',1,TRUE)
a<-table.element(a,round(T$conf.int[1], digits=5) )
a <- table.row.end(a)
a<-table.row.start(a)
a <- table.element(a,'Upper Confidence Limit',1,TRUE)
a<-table.element(a,round(T$conf.int[2], digits=5) )
a <- table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')
}
a<-table.start()
a <- table.row.start(a)
a <- table.element(a,'Standard Deviations',3,TRUE)
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'Variable 1',1,TRUE)
a<-table.element(a,round(sd(x[,par2], na.rm=TRUE), digits=5) )
a <- table.row.end(a)
a <- table.row.start(a)
a <- table.element(a,'Variable 2',1,TRUE)
a<-table.element(a,round(sd(x[,par3], na.rm=TRUE), digits=5) )
a <- table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable1.tab')