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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_Simple Regression Y ~ X.wasp
Title produced by softwareSimple Linear Regression
Date of computationFri, 04 Dec 2015 12:30:39 +0000
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2015/Dec/04/t1449232350jx7f74n69uygnqz.htm/, Retrieved Thu, 16 May 2024 09:56:35 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=285108, Retrieved Thu, 16 May 2024 09:56:35 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact63

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Simple Linear Regression] [simple regression] [2015-12-04 12:30:39] [d624a477b958b53c469d78e25da15660] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
1 12.9
1 12.2
1 12.8
1 7.4
1 6.7
1 12.6
1 14.8
1 13.3
1 11.1
1 8.2
1 11.4
1 6.4
1 10.6
1 12
1 6.3
0 11.3
1 11.9
1 9.3
0 9.6
1 10
1 6.4
1 13.8
1 10.8
1 13.8
1 11.7
1 10.9
0 16.1
0 13.4
1 9.9
1 11.5
1 8.3
1 11.7
1 9
1 9.7
1 10.8
1 10.3
1 10.4
0 12.7
1 9.3
1 11.8
1 5.9
1 11.4
1 13
1 10.8
0 12.3
1 11.3
1 11.8
0 7.9
1 12.7
0 12.3
0 11.6
0 6.7
1 10.9
0 12.1
1 13.3
1 10.1
0 5.7
1 14.3
0 8
0 13.3
1 9.3
1 12.5
1 7.6
1 15.9
1 9.2
0 9.1
1 11.1
1 13
1 14.5
0 12.2
1 12.3
1 11.4
0 8.8
0 14.6
1 12.6
1 13
0 12.6
1 13.2
0 9.9
1 7.7
0 10.5
0 13.4
0 10.9
0 4.3
0 10.3
0 11.8
0 11.2
0 11.4
0 8.6
0 13.2
0 12.6
0 5.6
0 9.9
0 8.8
0 7.7
0 9
0 7.3
0 11.4
0 13.6
0 7.9
0 10.7
0 10.3
0 8.3
0 9.6
0 14.2
0 8.5
0 13.5
0 4.9
0 6.4
0 9.6
0 11.6
0 11.1
1 4.35
1 12.7
1 18.1
1 17.85
0 16.6
0 12.6
1 17.1
1 19.1
1 16.1
1 13.35
1 18.4
1 14.7
1 10.6
1 12.6
1 16.2
1 13.6
0 18.9
1 14.1
1 14.5
1 16.15
1 14.75
1 14.8
1 12.45
1 12.65
1 17.35
1 8.6
1 18.4
1 16.1
0 11.6
1 17.75
1 15.25
1 17.65
1 16.35
1 17.65
1 13.6
1 14.35
1 14.75
1 18.25
1 9.9
1 16
1 18.25
1 16.85
0 14.6
0 13.85
1 18.95
1 15.6
0 14.85
0 11.75
0 18.45
0 15.9
1 17.1
1 16.1
0 19.9
0 10.95
0 18.45
0 15.1
0 15
0 11.35
0 15.95
0 18.1
0 14.6
1 15.4
1 15.4
0 17.6
1 13.35
1 19.1
0 15.35
1 7.6
0 13.4
0 13.9
1 19.1
0 15.25
0 12.9
0 16.1
0 17.35
0 13.15
0 12.15
0 12.6
0 10.35
0 15.4
0 9.6
0 18.2
0 13.6
0 14.85
1 14.75
0 14.1
0 14.9
0 16.25
1 19.25
0 13.6
1 13.6
0 15.65
1 12.75
0 14.6
1 9.85
0 12.65
0 19.2
0 16.6
0 11.2
1 15.25
1 11.9
0 13.2
1 16.35
1 12.4
0 15.85
1 18.15
0 11.15
0 15.65
1 17.75
0 7.65
1 12.35
1 15.6
1 19.3
0 15.2
1 17.1
0 15.6
1 18.4
1 19.05
1 18.55
1 19.1
0 13.1
1 12.85
1 9.5
1 4.5
0 11.85
1 13.6
1 11.7
0 12.4
1 13.35
0 11.4
0 14.9
0 19.9
0 11.2
0 14.6
1 17.6
1 14.05
1 16.1
1 13.35
1 11.85
1 11.95
0 14.75
0 15.15
1 13.2
0 16.85
0 7.85
1 7.7
0 12.6
0 7.85
0 10.95
0 12.35
0 9.95
0 14.9
0 16.65
0 13.4
0 13.95
0 15.7
0 16.85
0 10.95
0 15.35
0 12.2
0 15.1
0 17.75
0 15.2
1 14.6
0 16.65
0 8.1

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time6 seconds
R Server'Gwilym Jenkins' @ jenkins.wessa.net

\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 & 6 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=285108&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]6 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Gwilym Jenkins' @ jenkins.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=285108&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=285108&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 time6 seconds
R Server'Gwilym Jenkins' @ jenkins.wessa.net






Linear Regression Model
Y ~ X
coefficients:
EstimateStd. Errort valuePr(>|t|)
(Intercept)12.7350.29143.780
X0.4690.4071.1530.25
- - -
Residual Std. Err. 3.392 on 276 df
Multiple R-sq. 0.005
95% CI Multiple R-sq. [0, 0.037]
Adjusted R-sq. 0.001

\begin{tabular}{lllllllll}
\hline
Linear Regression Model \tabularnewline
Y ~ X \tabularnewline
coefficients: &   \tabularnewline
  & Estimate & Std. Error & t value & Pr(>|t|) \tabularnewline
(Intercept) & 12.735 & 0.291 & 43.78 & 0 \tabularnewline
X & 0.469 & 0.407 & 1.153 & 0.25 \tabularnewline
- - -  &   \tabularnewline
Residual Std. Err.  & 3.392  on  276 df \tabularnewline
Multiple R-sq.  & 0.005 \tabularnewline
95% CI Multiple R-sq.  & [0, 0.037] \tabularnewline
Adjusted R-sq.  & 0.001 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=285108&T=1

[TABLE]
[ROW][C]Linear Regression Model[/C][/ROW]
[ROW][C]Y ~ X[/C][/ROW]
[ROW][C]coefficients:[/C][C] [/C][/ROW]
[ROW][C] [/C][C]Estimate[/C][C]Std. Error[/C][C]t value[/C][C]Pr(>|t|)[/C][/ROW]
[C](Intercept)[/C][C]12.735[/C][C]0.291[/C][C]43.78[/C][C]0[/C][/ROW]
[C]X[/C][C]0.469[/C][C]0.407[/C][C]1.153[/C][C]0.25[/C][/ROW]
[ROW][C]- - - [/C][C] [/C][/ROW]
[ROW][C]Residual Std. Err. [/C][C]3.392  on  276 df[/C][/ROW]
[ROW][C]Multiple R-sq. [/C][C]0.005[/C][/ROW]
[ROW][C]95% CI Multiple R-sq. [/C][C][0, 0.037][/C][/ROW]
[ROW][C]Adjusted R-sq. [/C][C]0.001[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=285108&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=285108&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:

Linear Regression Model
Y ~ X
coefficients:
EstimateStd. Errort valuePr(>|t|)
(Intercept)12.7350.29143.780
X0.4690.4071.1530.25
- - -
Residual Std. Err. 3.392 on 276 df
Multiple R-sq. 0.005
95% CI Multiple R-sq. [0, 0.037]
Adjusted R-sq. 0.001






ANOVA Statistics
DfSum SqMean SqF valuePr(>F)
group115.29915.2991.3290.25
Residuals2763176.20511.508 

\begin{tabular}{lllllllll}
\hline
ANOVA Statistics \tabularnewline
  & Df & Sum Sq & Mean Sq & F value & Pr(>F) \tabularnewline
group & 1 & 15.299 & 15.299 & 1.329 & 0.25 \tabularnewline
Residuals & 276 & 3176.205 & 11.508 &   &   \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=285108&T=2

[TABLE]
[ROW][C]ANOVA Statistics[/C][/ROW]
[ROW][C] [/C][C]Df[/C][C]Sum Sq[/C][C]Mean Sq[/C][C]F value[/C][C]Pr(>F)[/C][/ROW]
[ROW][C]group[/C][C]1[/C][C]15.299[/C][C]15.299[/C][C]1.329[/C][C]0.25[/C][/ROW]
[ROW][C]Residuals[/C][C]276[/C][C]3176.205[/C][C]11.508[/C][C] [/C][C] [/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=285108&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=285108&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:

ANOVA Statistics
DfSum SqMean SqF valuePr(>F)
group115.29915.2991.3290.25
Residuals2763176.20511.508


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 2 ; par2 = 1 ; par3 = TRUE ;
Parameters (R input):
par1 = 2 ; par2 = 1 ; par3 = TRUE ;
R code (references can be found in the software module):
library(boot)
cat1 <- as.numeric(par1)
cat2<- as.numeric(par2)
intercept<-as.logical(par3)
x <- na.omit(t(x))
rsq <- function(formula, data, indices) {
d <- data[indices,] # allows boot to select sample
fit <- lm(formula, data=d)
return(summary(fit)$r.square)
}
xdf<-data.frame(na.omit(t(y)))
(V1<-dimnames(y)[[1]][cat1])
(V2<-dimnames(y)[[1]][cat2])
xdf <- data.frame(xdf[[cat1]], xdf[[cat2]])
names(xdf)<-c('Y', 'X')
if(intercept == FALSE) (lmxdf<-lm(Y~ X - 1, data = xdf) ) else (lmxdf<-lm(Y~ X, data = xdf) )
(results <- boot(data=xdf, statistic=rsq, R=1000, formula=Y~X))
sumlmxdf<-summary(lmxdf)
(aov.xdf<-aov(lmxdf) )
(anova.xdf<-anova(lmxdf) )
load(file='createtable')
a<-table.start()
nc <- ncol(sumlmxdf$'coefficients')
nr <- nrow(sumlmxdf$'coefficients')
a<-table.row.start(a)
a<-table.element(a,'Linear Regression Model', nc+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, lmxdf$call['formula'],nc+1)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'coefficients:',1,TRUE)
a<-table.element(a, ' ',nc,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, ' ',1,TRUE)
for(i in 1 : nc){
a<-table.element(a, dimnames(sumlmxdf$'coefficients')[[2]][i],1,TRUE)
}#end header
a<-table.row.end(a)
for(i in 1: nr){
a<-table.element(a,dimnames(sumlmxdf$'coefficients')[[1]][i] ,1,TRUE)
for(j in 1 : nc){
a<-table.element(a, round(sumlmxdf$coefficients[i, j], digits=3), 1 ,FALSE)
}
a<-table.row.end(a)
}
a<-table.row.start(a)
a<-table.element(a, '- - - ',1,TRUE)
a<-table.element(a, ' ',nc,FALSE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Residual Std. Err. ',1,TRUE)
a<-table.element(a, paste(round(sumlmxdf$'sigma', digits=3), ' on ', sumlmxdf$'df'[2], 'df') ,nc, FALSE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Multiple R-sq. ',1,TRUE)
a<-table.element(a, round(sumlmxdf$'r.squared', digits=3) ,nc, FALSE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, '95% CI Multiple R-sq. ',1,TRUE)
a<-table.element(a, paste('[',round(boot.ci(results,type='bca')$bca[1,4], digits=3),', ', round(boot.ci(results,type='bca')$bca[1,5], digits=3), ']',sep='') ,nc, FALSE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Adjusted R-sq. ',1,TRUE)
a<-table.element(a, round(sumlmxdf$'adj.r.squared', digits=3) ,nc, FALSE)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'ANOVA Statistics', 5+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, ' ',1,TRUE)
a<-table.element(a, 'Df',1,TRUE)
a<-table.element(a, 'Sum Sq',1,TRUE)
a<-table.element(a, 'Mean Sq',1,TRUE)
a<-table.element(a, 'F value',1,TRUE)
a<-table.element(a, 'Pr(>F)',1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, V2,1,TRUE)
a<-table.element(a, anova.xdf$Df[1])
a<-table.element(a, round(anova.xdf$'Sum Sq'[1], digits=3))
a<-table.element(a, round(anova.xdf$'Mean Sq'[1], digits=3))
a<-table.element(a, round(anova.xdf$'F value'[1], digits=3))
a<-table.element(a, round(anova.xdf$'Pr(>F)'[1], digits=3))
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Residuals',1,TRUE)
a<-table.element(a, anova.xdf$Df[2])
a<-table.element(a, round(anova.xdf$'Sum Sq'[2], digits=3))
a<-table.element(a, round(anova.xdf$'Mean Sq'[2], digits=3))
a<-table.element(a, ' ')
a<-table.element(a, ' ')
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable1.tab')
bitmap(file='regressionplot.png')
plot(Y~ X, data=xdf, xlab=V2, ylab=V1, main='Regression Solution')
if(intercept == TRUE) abline(coef(lmxdf), col='red')
if(intercept == FALSE) abline(0.0, coef(lmxdf), col='red')
dev.off()
library(car)
bitmap(file='residualsQQplot.png')
qqPlot(resid(lmxdf), main='QQplot of Residuals of Fit')
dev.off()
bitmap(file='residualsplot.png')
plot(xdf$X, resid(lmxdf), main='Scatterplot of Residuals of Model Fit')
dev.off()
bitmap(file='cooksDistanceLmplot.png')
plot(lmxdf, which=4)
dev.off()