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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 computationWed, 16 Dec 2015 11:54:24 +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/16/t145026687854pzapfnmj1vjrw.htm/, Retrieved Thu, 16 May 2024 17:34:43 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=286687, Retrieved Thu, 16 May 2024 17:34:43 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact69

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] [b] [2015-12-16 11:54:24] [067caf4c851abbac74466517b25c88c8] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
2.1 4.2
0 0.5
2.1 4.6
0 5.2
0 2.7
4.2 4.2
0 1.8
0 1.7
2.1 3.8
0 0
2.1 3.9
0 3.5
0 1
0 1.7
6.3 7.8
4.2 4.9
2.1 3.8
0 0
0 7.7
0 0
4.2 7.7
0 0
8.4 10.1
0 1.7
0 0
2.1 8.6
0 3.9
4.2 4.2
0 1.7
0 0
6.3 7
0 1.8
8.4 8.4
0 3.4
0 7
2.1 3.9
0 2.7
4.2 7.7
0 1.7
0 1.7
10.5 11
0 1.8
2.1 2.1
0 0.7
0 1.7
0 10.5
4.2 6.2
0 1.8
0 1.7
6.3 7
0 3.5
2.1 3.8
0 0.5
0 1.8
8.4 8.4
2.1 7.7
0 1.7
2.1 4.9
0 0
0 1.8
6.3 6.3
0 5.2
0 1
0 1
0 0
4.2 5.6
2.1 5.6
0 3.8
0 3.5
6.3 6.3
0 0
4.2 5.9
0 1.7
0 3.5
0 1.8
0 0
8.4 8.4
2.1 5.1
0 7
0 3.4
4.2 4.2
0 0
0 1.4
2.1 3.9
6.3 6.3
0 7
2.1 2.1
2.1 4.5
0 0
0 3.5
6.3 8.1
4.2 4.2
0 0
0 1.7
0 5.3
0 1.8
0 0
2.1 13.6
8.4 9.4
0 0
2.1 2.1
0 1.7
2.1 2.1
0 0
0 3.5
0 1.8
0 0
6.3 8
0 0
2.1 2.1
2.1 3.9
0 1
4.2 7.7
2.1 2.1
0 1.7
0 0
0 1
4.2 6
0 0
0 1.8
0 3.5
4.2 4.2
4.2 7.6
0 1
0 1.8
2.1 2.1
0 1
0 1.7
8.4 8.4
2.1 10.8
0 1.8
2.1 2.1
0 0
0 0.7
2.1 5.6
4.2 6
0 1.7
0 1.8
0 5.2
6.3 6.3
0 0
0 3.4
0 1
0 1
2.1 5.6
2.1 8.3
2.1 2.6
2.1 2.1
0 0
0 3.5
4.2 8.3
0 7
0 3.4
0 1
4.2 4.2

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time5 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 & 5 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=286687&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]5 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=286687&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=286687&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 time5 seconds
R Server'Gwilym Jenkins' @ jenkins.wessa.net






Linear Regression Model
Y ~ X
coefficients:
EstimateStd. Errort valuePr(>|t|)
(Intercept)-0.4210.22-1.9180.057
X0.5790.04812.1070
- - -
Residual Std. Err. 1.746 on 153 df
Multiple R-sq. 0.489
95% CI Multiple R-sq. [0.34, 0.626]
Adjusted R-sq. 0.486

\begin{tabular}{lllllllll}
\hline
Linear Regression Model \tabularnewline
Y ~ X \tabularnewline
coefficients: &   \tabularnewline
  & Estimate & Std. Error & t value & Pr(>|t|) \tabularnewline
(Intercept) & -0.421 & 0.22 & -1.918 & 0.057 \tabularnewline
X & 0.579 & 0.048 & 12.107 & 0 \tabularnewline
- - -  &   \tabularnewline
Residual Std. Err.  & 1.746  on  153 df \tabularnewline
Multiple R-sq.  & 0.489 \tabularnewline
95% CI Multiple R-sq.  & [0.34, 0.626] \tabularnewline
Adjusted R-sq.  & 0.486 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=286687&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]-0.421[/C][C]0.22[/C][C]-1.918[/C][C]0.057[/C][/ROW]
[C]X[/C][C]0.579[/C][C]0.048[/C][C]12.107[/C][C]0[/C][/ROW]
[ROW][C]- - - [/C][C] [/C][/ROW]
[ROW][C]Residual Std. Err. [/C][C]1.746  on  153 df[/C][/ROW]
[ROW][C]Multiple R-sq. [/C][C]0.489[/C][/ROW]
[ROW][C]95% CI Multiple R-sq. [/C][C][0.34, 0.626][/C][/ROW]
[ROW][C]Adjusted R-sq. [/C][C]0.486[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=286687&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=286687&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)-0.4210.22-1.9180.057
X0.5790.04812.1070
- - -
Residual Std. Err. 1.746 on 153 df
Multiple R-sq. 0.489
95% CI Multiple R-sq. [0.34, 0.626]
Adjusted R-sq. 0.486






ANOVA Statistics
DfSum SqMean SqF valuePr(>F)
weektotaal1446.874446.874146.5870
Residuals153466.4233.049 

\begin{tabular}{lllllllll}
\hline
ANOVA Statistics \tabularnewline
  & Df & Sum Sq & Mean Sq & F value & Pr(>F) \tabularnewline
weektotaal & 1 & 446.874 & 446.874 & 146.587 & 0 \tabularnewline
Residuals & 153 & 466.423 & 3.049 &   &   \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=286687&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]weektotaal[/C][C]1[/C][C]446.874[/C][C]446.874[/C][C]146.587[/C][C]0[/C][/ROW]
[ROW][C]Residuals[/C][C]153[/C][C]466.423[/C][C]3.049[/C][C] [/C][C] [/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=286687&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=286687&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)
weektotaal1446.874446.874146.5870
Residuals153466.4233.049


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
par1 = 1 ; par2 = 2 ; 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()