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Workshop 7

*The author of this computation has been verified*
R Software Module: /rwasp_multipleregression.wasp (opens new window with default values)
Title produced by software: Multiple Regression
Date of computation: Sat, 21 Nov 2009 06:45:34 -0700
 
Cite this page as follows:
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds.htm/, Retrieved Sat, 21 Nov 2009 14:46:39 +0100
 
BibTeX entries for LaTeX users:
@Manual{KEY,
    author = {{YOUR NAME}},
    publisher = {Office for Research Development and Education},
    title = {Statistical Computations at FreeStatistics.org, URL http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds.htm/},
    year = {2009},
}
@Manual{R,
    title = {R: A Language and Environment for Statistical Computing},
    author = {{R Development Core Team}},
    organization = {R Foundation for Statistical Computing},
    address = {Vienna, Austria},
    year = {2009},
    note = {{ISBN} 3-900051-07-0},
    url = {http://www.R-project.org},
}
 
Original text written by user:
 
IsPrivate?
No (this computation is public)
 
User-defined keywords:
WS 7 part 3
 
Dataseries X:
» Textbox « » Textfile « » CSV «
9.3 98.3 9.3 112.3 8.7 113.9 8.2 106.2 8.3 98.6 8.5 96.5 8.6 95.9 8.5 103.7 8.2 103.1 8.1 103.7 7.9 112.1 8.6 86.9 8.7 95 8.7 111.8 8.5 108.8 8.4 109.3 8.5 101.4 8.7 100.5 8.7 100.7 8.6 113.5 8.5 106.1 8.3 111.6 8 114.9 8.2 88.6 8.1 99.5 8.1 115.1 8 118 7.9 111.4 7.9 107.3 8 105.3 8 105.3 7.9 117.9 8 110.2 7.7 112.4 7.2 117.5 7.5 93 7.3 103.5 7 116.3 7 120 7 114.3 7.2 104.7 7.3 109.8 7.1 112.6 6.8 114.4 6.4 115.7 6.1 114.7 6.5 118.4 7.7 94.9 7.9 103.8 7.5 115.1 6.9 113.7 6.6 104 6.9 94.3 7.7 92.5 8 93.2 8 104.7 7.7 94 7.3 98.1 7.4 102.7 8.1 82.4
 
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 Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time5 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135


Multiple Linear Regression - Estimated Regression Equation
Y[t] = + 12.9761973202013 -0.0437302424418521X[t] + 0.391874378892299M1[t] + 0.897837711324807M2[t] + 0.660439609582997M3[t] + 0.234421907724963M4[t] + 0.063567535529736M5[t] + 0.358066167101888M6[t] + 0.454545831418218M7[t] + 0.770604000129826M8[t] + 0.380445097074110M9[t] + 0.249516963843914M10[t] + 0.398409694904394M11[t] -0.0293669140023821t + e[t]


Multiple Linear Regression - Ordinary Least Squares
VariableParameterS.D.T-STAT
H0: parameter = 0
2-tail p-value1-tail p-value
(Intercept)12.97619732020130.91126514.239800
X-0.04373024244185210.009977-4.3836.7e-053.4e-05
M10.3918743788922990.2782711.40820.1657810.082891
M20.8978377113248070.3573882.51220.0155680.007784
M30.6604396095829970.3624271.82230.0749190.03746
M40.2344219077249630.3233710.72490.4721660.236083
M50.0635675355297360.2820310.22540.8226730.411336
M60.3580661671018880.2803391.27730.207920.10396
M70.4545458314182180.2827781.60740.1148040.057402
M80.7706040001298260.3338432.30830.0255310.012765
M90.3804450970741100.3035911.25310.2164840.108242
M100.2495169638439140.3165140.78830.4345490.217274
M110.3984096949043940.3486671.14270.259090.129545
t-0.02936691400238210.003053-9.619500


Multiple Linear Regression - Regression Statistics
Multiple R0.865878546514659
R-squared0.749745657314338
Adjusted R-squared0.679021603946651
F-TEST (value)10.6009995413652
F-TEST (DF numerator)13
F-TEST (DF denominator)46
p-value7.08769265500564e-10
Multiple Linear Regression - Residual Statistics
Residual Standard Deviation0.401166295786969
Sum Squared Residuals7.40298225627013


Multiple Linear Regression - Actuals, Interpolation, and Residuals
Time or IndexActualsInterpolation
Forecast
Residuals
Prediction Error
19.39.04002195305720.259978046942795
29.38.904394977301340.395605022698658
38.78.567661573650190.132338426349814
48.28.44899982459203-0.248999824592030
58.38.5811283809525-0.281128380952497
68.58.93809360765016-0.438093607650156
78.69.03144450342922-0.431444503429216
88.58.977039867092-0.477039867091993
98.28.58375219549901-0.383752195499008
108.18.39721900280132-0.297219002801319
117.98.14941078334786-0.249410783347860
128.68.82363628397576-0.223636283975755
138.78.83192878508667-0.131928785086671
148.78.573857130493680.126142869506320
158.58.438282842075050.0617171579249544
168.47.96103310499370.438966895006296
178.58.106280734086730.393719265913274
188.78.410769669854160.289230330145837
198.78.469136371679740.230863628320259
208.68.196080523133260.403919476866741
218.58.100158500144870.399841499855133
228.37.69934711948210.600652880517898
2387.674563136482090.325436863517912
248.28.39689190379602-0.196891903796023
258.18.28273972606975-0.182739726069751
268.18.077144362406980.0228556375930144
2787.683561643581420.316438356418579
287.97.516796627837230.383203372162772
297.97.495869335651210.404130664348787
3087.848461538104690.151538461895312
3187.915574288418640.0844257115813641
327.97.651264488360520.248735511639476
3387.568461538104690.431538461895313
347.77.311959957500040.388040042499964
357.27.20846153810469-0.00846153810468793
367.57.85207586902329-0.352075869023288
377.37.75541578827376-0.455415788273757
3877.67226510344818-0.672265103448178
3977.24369819066913-0.243698190669132
4077.03757595672727-0.0375759567272731
417.27.25716499797144-0.057164997971444
427.37.299272479087770.000727520912231643
437.17.24394055056453-0.143940550564531
446.87.45191736887842-0.651917368878422
456.46.97554223664592-0.575542236645916
466.16.8589774318552-0.758977431855192
476.56.81670135187844-0.316701351878436
487.77.416585440355180.283414559644817
497.97.389893747512620.510106252487384
507.57.372338426349820.127661573650185
516.97.16679575002421-0.266795750024215
526.67.13559448584977-0.535594485849765
536.97.35955655133812-0.45955655133812
547.77.70340270530322-0.00340270530322409
5587.739904285907880.260095714092124
5687.52369775253580.476302247464198
577.77.572085529605520.127914470394478
587.37.232496488361350.0675035116386488
597.47.150863190186930.249136809813071
608.17.610810502849750.48918949715025


Goldfeld-Quandt test for Heteroskedasticity
p-valuesAlternative Hypothesis
breakpoint indexgreater2-sidedless
170.2288831995748390.4577663991496790.771116800425161
180.1078848807481690.2157697614963380.892115119251831
190.04868223044559690.09736446089119380.951317769554403
200.03366135426414610.06732270852829210.966338645735854
210.02267801099529990.04535602199059970.9773219890047
220.01085461130493050.02170922260986100.98914538869507
230.004547492454977220.009094984909954440.995452507545023
240.004542383953234410.009084767906468830.995457616046766
250.03546363947831310.07092727895662630.964536360521687
260.05400223387386880.1080044677477380.945997766126131
270.04835023741694680.09670047483389360.951649762583053
280.03193727275695000.06387454551389990.96806272724305
290.03085863794327450.0617172758865490.969141362056726
300.02153054231991420.04306108463982830.978469457680086
310.01478510470296760.02957020940593520.985214895297032
320.01281911652738920.02563823305477840.98718088347261
330.01440218616582460.02880437233164920.985597813834175
340.04329613076488810.08659226152977630.956703869235112
350.05413354712043170.1082670942408630.945866452879568
360.04447134523386570.08894269046773130.955528654766134
370.09110906553630410.1822181310726080.908890934463696
380.2262986106987530.4525972213975060.773701389301247
390.1889826084845580.3779652169691170.811017391515442
400.2441529244597420.4883058489194840.755847075540258
410.5084922982170970.9830154035658070.491507701782903
420.6180882234712930.7638235530574150.381911776528708
430.5182572694237540.963485461152490.481742730576246


Meta Analysis of Goldfeld-Quandt test for Heteroskedasticity
Description# significant tests% significant testsOK/NOK
1% type I error level20.0740740740740741NOK
5% type I error level80.296296296296296NOK
10% type I error level160.592592592592593NOK
 
Charts produced by software:
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/10dq1j1258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/10dq1j1258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/1yw4n1258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/1yw4n1258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/2tn881258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/2tn881258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/3fte61258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/3fte61258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/4nlt61258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/4nlt61258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/5i6g71258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/5i6g71258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/6lnl21258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/6lnl21258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/7jawb1258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/7jawb1258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/8f1kd1258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/8f1kd1258811128.ps (open in new window)


http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/9nfvm1258811128.png (open in new window)
http://www.freestatistics.org/blog/date/2009/Nov/21/t12588111876c99wzga0rbt6ds/9nfvm1258811128.ps (open in new window)


 
Parameters (Session):
par1 = 1 ; par2 = Include Monthly Dummies ; par3 = Linear Trend ;
 
Parameters (R input):
par1 = 1 ; par2 = Include Monthly Dummies ; par3 = Linear Trend ;
 
R code (references can be found in the software module):
library(lattice)
library(lmtest)
n25 <- 25 #minimum number of obs. for Goldfeld-Quandt test
par1 <- as.numeric(par1)
x <- t(y)
k <- length(x[1,])
n <- length(x[,1])
x1 <- cbind(x[,par1], x[,1:k!=par1])
mycolnames <- c(colnames(x)[par1], colnames(x)[1:k!=par1])
colnames(x1) <- mycolnames #colnames(x)[par1]
x <- x1
if (par3 == 'First Differences'){
x2 <- array(0, dim=c(n-1,k), dimnames=list(1:(n-1), paste('(1-B)',colnames(x),sep='')))
for (i in 1:n-1) {
for (j in 1:k) {
x2[i,j] <- x[i+1,j] - x[i,j]
}
}
x <- x2
}
if (par2 == 'Include Monthly Dummies'){
x2 <- array(0, dim=c(n,11), dimnames=list(1:n, paste('M', seq(1:11), sep ='')))
for (i in 1:11){
x2[seq(i,n,12),i] <- 1
}
x <- cbind(x, x2)
}
if (par2 == 'Include Quarterly Dummies'){
x2 <- array(0, dim=c(n,3), dimnames=list(1:n, paste('Q', seq(1:3), sep ='')))
for (i in 1:3){
x2[seq(i,n,4),i] <- 1
}
x <- cbind(x, x2)
}
k <- length(x[1,])
if (par3 == 'Linear Trend'){
x <- cbind(x, c(1:n))
colnames(x)[k+1] <- 't'
}
x
k <- length(x[1,])
df <- as.data.frame(x)
(mylm <- lm(df))
(mysum <- summary(mylm))
if (n > n25) {
kp3 <- k + 3
nmkm3 <- n - k - 3
gqarr <- array(NA, dim=c(nmkm3-kp3+1,3))
numgqtests <- 0
numsignificant1 <- 0
numsignificant5 <- 0
numsignificant10 <- 0
for (mypoint in kp3:nmkm3) {
j <- 0
numgqtests <- numgqtests + 1
for (myalt in c('greater', 'two.sided', 'less')) {
j <- j + 1
gqarr[mypoint-kp3+1,j] <- gqtest(mylm, point=mypoint, alternative=myalt)$p.value
}
if (gqarr[mypoint-kp3+1,2] < 0.01) numsignificant1 <- numsignificant1 + 1
if (gqarr[mypoint-kp3+1,2] < 0.05) numsignificant5 <- numsignificant5 + 1
if (gqarr[mypoint-kp3+1,2] < 0.10) numsignificant10 <- numsignificant10 + 1
}
gqarr
}
bitmap(file='test0.png')
plot(x[,1], type='l', main='Actuals and Interpolation', ylab='value of Actuals and Interpolation (dots)', xlab='time or index')
points(x[,1]-mysum$resid)
grid()
dev.off()
bitmap(file='test1.png')
plot(mysum$resid, type='b', pch=19, main='Residuals', ylab='value of Residuals', xlab='time or index')
grid()
dev.off()
bitmap(file='test2.png')
hist(mysum$resid, main='Residual Histogram', xlab='values of Residuals')
grid()
dev.off()
bitmap(file='test3.png')
densityplot(~mysum$resid,col='black',main='Residual Density Plot', xlab='values of Residuals')
dev.off()
bitmap(file='test4.png')
qqnorm(mysum$resid, main='Residual Normal Q-Q Plot')
qqline(mysum$resid)
grid()
dev.off()
(myerror <- as.ts(mysum$resid))
bitmap(file='test5.png')
dum <- cbind(lag(myerror,k=1),myerror)
dum
dum1 <- dum[2:length(myerror),]
dum1
z <- as.data.frame(dum1)
z
plot(z,main=paste('Residual Lag plot, lowess, and regression line'), ylab='values of Residuals', xlab='lagged values of Residuals')
lines(lowess(z))
abline(lm(z))
grid()
dev.off()
bitmap(file='test6.png')
acf(mysum$resid, lag.max=length(mysum$resid)/2, main='Residual Autocorrelation Function')
grid()
dev.off()
bitmap(file='test7.png')
pacf(mysum$resid, lag.max=length(mysum$resid)/2, main='Residual Partial Autocorrelation Function')
grid()
dev.off()
bitmap(file='test8.png')
opar <- par(mfrow = c(2,2), oma = c(0, 0, 1.1, 0))
plot(mylm, las = 1, sub='Residual Diagnostics')
par(opar)
dev.off()
if (n > n25) {
bitmap(file='test9.png')
plot(kp3:nmkm3,gqarr[,2], main='Goldfeld-Quandt test',ylab='2-sided p-value',xlab='breakpoint')
grid()
dev.off()
}
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a, 'Multiple Linear Regression - Estimated Regression Equation', 1, TRUE)
a<-table.row.end(a)
myeq <- colnames(x)[1]
myeq <- paste(myeq, '[t] = ', sep='')
for (i in 1:k){
if (mysum$coefficients[i,1] > 0) myeq <- paste(myeq, '+', '')
myeq <- paste(myeq, mysum$coefficients[i,1], sep=' ')
if (rownames(mysum$coefficients)[i] != '(Intercept)') {
myeq <- paste(myeq, rownames(mysum$coefficients)[i], sep='')
if (rownames(mysum$coefficients)[i] != 't') myeq <- paste(myeq, '[t]', sep='')
}
}
myeq <- paste(myeq, ' + e[t]')
a<-table.row.start(a)
a<-table.element(a, myeq)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable1.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,hyperlink('http://www.xycoon.com/ols1.htm','Multiple Linear Regression - Ordinary Least Squares',''), 6, TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Variable',header=TRUE)
a<-table.element(a,'Parameter',header=TRUE)
a<-table.element(a,'S.D.',header=TRUE)
a<-table.element(a,'T-STAT<br />H0: parameter = 0',header=TRUE)
a<-table.element(a,'2-tail p-value',header=TRUE)
a<-table.element(a,'1-tail p-value',header=TRUE)
a<-table.row.end(a)
for (i in 1:k){
a<-table.row.start(a)
a<-table.element(a,rownames(mysum$coefficients)[i],header=TRUE)
a<-table.element(a,mysum$coefficients[i,1])
a<-table.element(a, round(mysum$coefficients[i,2],6))
a<-table.element(a, round(mysum$coefficients[i,3],4))
a<-table.element(a, round(mysum$coefficients[i,4],6))
a<-table.element(a, round(mysum$coefficients[i,4]/2,6))
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable2.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a, 'Multiple Linear Regression - Regression Statistics', 2, TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Multiple R',1,TRUE)
a<-table.element(a, sqrt(mysum$r.squared))
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'R-squared',1,TRUE)
a<-table.element(a, mysum$r.squared)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Adjusted R-squared',1,TRUE)
a<-table.element(a, mysum$adj.r.squared)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'F-TEST (value)',1,TRUE)
a<-table.element(a, mysum$fstatistic[1])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'F-TEST (DF numerator)',1,TRUE)
a<-table.element(a, mysum$fstatistic[2])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'F-TEST (DF denominator)',1,TRUE)
a<-table.element(a, mysum$fstatistic[3])
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'p-value',1,TRUE)
a<-table.element(a, 1-pf(mysum$fstatistic[1],mysum$fstatistic[2],mysum$fstatistic[3]))
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Multiple Linear Regression - Residual Statistics', 2, TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Residual Standard Deviation',1,TRUE)
a<-table.element(a, mysum$sigma)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Sum Squared Residuals',1,TRUE)
a<-table.element(a, sum(myerror*myerror))
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable3.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a, 'Multiple Linear Regression - Actuals, Interpolation, and Residuals', 4, TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Time or Index', 1, TRUE)
a<-table.element(a, 'Actuals', 1, TRUE)
a<-table.element(a, 'Interpolation<br />Forecast', 1, TRUE)
a<-table.element(a, 'Residuals<br />Prediction Error', 1, TRUE)
a<-table.row.end(a)
for (i in 1:n) {
a<-table.row.start(a)
a<-table.element(a,i, 1, TRUE)
a<-table.element(a,x[i])
a<-table.element(a,x[i]-mysum$resid[i])
a<-table.element(a,mysum$resid[i])
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable4.tab')
if (n > n25) {
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Goldfeld-Quandt test for Heteroskedasticity',4,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'p-values',header=TRUE)
a<-table.element(a,'Alternative Hypothesis',3,header=TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'breakpoint index',header=TRUE)
a<-table.element(a,'greater',header=TRUE)
a<-table.element(a,'2-sided',header=TRUE)
a<-table.element(a,'less',header=TRUE)
a<-table.row.end(a)
for (mypoint in kp3:nmkm3) {
a<-table.row.start(a)
a<-table.element(a,mypoint,header=TRUE)
a<-table.element(a,gqarr[mypoint-kp3+1,1])
a<-table.element(a,gqarr[mypoint-kp3+1,2])
a<-table.element(a,gqarr[mypoint-kp3+1,3])
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable5.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Meta Analysis of Goldfeld-Quandt test for Heteroskedasticity',4,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Description',header=TRUE)
a<-table.element(a,'# significant tests',header=TRUE)
a<-table.element(a,'% significant tests',header=TRUE)
a<-table.element(a,'OK/NOK',header=TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'1% type I error level',header=TRUE)
a<-table.element(a,numsignificant1)
a<-table.element(a,numsignificant1/numgqtests)
if (numsignificant1/numgqtests < 0.01) dum <- 'OK' else dum <- 'NOK'
a<-table.element(a,dum)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'5% type I error level',header=TRUE)
a<-table.element(a,numsignificant5)
a<-table.element(a,numsignificant5/numgqtests)
if (numsignificant5/numgqtests < 0.05) dum <- 'OK' else dum <- 'NOK'
a<-table.element(a,dum)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'10% type I error level',header=TRUE)
a<-table.element(a,numsignificant10)
a<-table.element(a,numsignificant10/numgqtests)
if (numsignificant10/numgqtests < 0.1) dum <- 'OK' else dum <- 'NOK'
a<-table.element(a,dum)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable6.tab')
}
 





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