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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_fitdistrchisq1.wasp
Title produced by softwareMaximum-likelihood Fitting - Chi-squared Distribution
Date of computationWed, 14 Dec 2016 15:42:17 +0100
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2016/Dec/14/t1481726703bhhlqky43vjfqnl.htm/, Retrieved Sat, 04 May 2024 04:19:53 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=299514, Retrieved Sat, 04 May 2024 04:19:53 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact86

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Maximum-likelihood Fitting - Chi-squared Distribution] [] [2016-12-14 14:42:17] [6e17bb30248b72d8119c893128a7a697] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
17	15
11	13
12	14
12	13
13	12
17	17
17	12
12	13
16	13
15	16
11	12
16	12
15	13
16	16
15	15
11	12
8	13
10	20
14	15
16	12
15	15
15	11
12	13
18	13
10	14
17	14
12	14
13	15
9	16
11	16
10	16
15	13
15	13
13	14
13	13
9	14
14	12
14	17
11	14
15	15
12	13
11	14
12	15
15	19
13	14
11	13
10	12
16	14
13	15
15	15
14	12
12	14
10	11
12	12
9	10
15	13
16	14
12	14
11	15
11	15
9	13
13	15
17	16
18	12
15	17
12	15
18	18
11	12
6	16
10	15
19	15
16	12
12	13
10	10
14	14
12	11
13	12
16	14
18	12
13	14
15	12
16	13
9	13
9	14
8	12
18	15
18	13
14	13
8	11
14	12
13	16
14	11
7	13
18	12
16	17
9	14
11	15
10	8
13	13
10	13
12	15
11	14
12	13
12	14
10	12
20	19
12	15
12	14
16	14
11	15
12	13
12	15
13	14
10	11
14	17
13	13
15	9
13	12
13	13
17	17
12	14
17	13
9	16
12	14
14	14
14	14
14	10
12	12
14	13
13	14
15	18
16	14
13	14
14	13
14	13
17	16
13	15
15	13
8	14
11	8
11	13
9	13
15	16
16	14
16	13
10	14
15	12
10	16
12	18
14	16
18	15
15	18
19	15
13	14
10	14
15	15
7	9
14	17
13	11
14	15
11	15
18	15
8	13
19	14
5	15
17	15
14	14
17	13

Tables (Output of Computation)





Summary of computational transaction
Raw Input view raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R ServerBig Analytics Cloud Computing Center

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input view raw input (R code)  \tabularnewline
Raw Outputview raw output of R engine  \tabularnewline
Computing time1 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=299514&T=0

[TABLE]
[ROW]
Summary of computational transaction[/C][/ROW] [ROW]Raw Input[/C] view raw input (R code) [/C][/ROW] [ROW]Raw Output[/C]view raw output of R engine [/C][/ROW] [ROW]Computing time[/C]1 seconds[/C][/ROW] [ROW]R Server[/C]Big Analytics Cloud Computing Center[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=299514&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=299514&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 Input view raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R ServerBig Analytics Cloud Computing Center


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 1 ; par2 = 2 ; par3 = 0.95 ; par4 = two.sided ; par5 = paired ; par6 = 0.0 ;
Parameters (R input):
R code (references can be found in the software module):
library(MASS)
library(car)
chii <- x
chi_df <- fitdistr(chii,'chi-squared',start=list(df=3), method='Brent',lower=0.1,upper=100)
chi_k <- chi_df[[1]][1]
bitmap(file='test1.png')
chi_hist <- hist(chii,breaks=50,col='gray',freq=FALSE,main='Histogram scaled to density',xlab='x')
curve(dchisq(x,df=chi_k),add=TRUE,col='red')
dev.off()
f<-chi_df
f$estimate
f$sd
xlab <- paste('Chisq(df = ',round(f$estimate[[1]],2),sep='')
xlab <- paste(xlab,')',sep='')
xlab
bitmap(file='test2.png')
qqPlot(x, dist='chisq', df=f$estimate[[1]], ncp=0, main='QQ plot (Chi-squared 1 param.)', xlab=xlab )
grid()
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Parameter',1,TRUE)
a<-table.element(a,'Estimated Value',1,TRUE)
a<-table.element(a,'Standard Deviation',1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'df',header=TRUE)
a<-table.element(a,f$estimate[1])
a<-table.element(a,f$sd[1])
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')