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Language Testing in Asia

Table 5 G-study table. Measurement design (SB/TMR)

From: The affectability of writing assessment scores: a G-theory analysis of rater, task, and scoring method contribution

Source of variance

Differentiation variance

Source of variance

Relative error variance

% relative

Absolute error variance

% absolute

S:B

4.59256

 

.....

 

.....

 
 

.....

R

.....

 

(0.00000)

0.0

 

.....

T

.....

 

(0.00000)

0.0

 

.....

M

.....

 

(0.00000)

0.0

B

(0.00000)

 

.....

 

.....

 
 

.....

SR:B

0.75959

99.2

0.75959

99.2

 

.....

ST:B

(0.00000)

0.0

(0.00000)

0.0

 

.....

SM:B

(0.00000)

0.0

(0.00000)

0.0

 

.....

RT

.....

 

(0.00000)

0.0

 

.....

RM

.....

 

(0.00000)

0.0

 

.....

RB

0.00619

0.8

0.00619

0.8

 

.....

TM

.....

 

(0.00000)

0.0

 

.....

TB

(0.00000)

0.0

(0.00000)

0.0

 

.....

MB

(0.00000)

0.0

(0.00000)

0.0

 

.....

SRT:B

(0.00000)

0.0

(0.00000)

0.0

 

.....

SRM:B

(0.00000)

0.0

(0.00000)

0.0

 

.....

STM:B

(0.00000)

0.0

(0.00000)

0.0

 

.....

RTM

.....

 

(0.00000)

0.0

 

.....

RTB

(0.00000)

0.0

(0.00000)

0.0

 

.....

RMB

(0.00000)

0.0

(0.00000)

0.0

 

.....

TMB

(0.00000)

0.0

(0.00000)

0.0

 

.....

SRTM:B

(0.00000)

0.0

(0.00000)

0.0

 

.....

RTMB

(0.00000)

0.0

(0.00000)

0.0

Sum of variances

4.59256

 

0.76578

100%

0.76578

100%

Standard deviation

2.14302

 

Relative SE 0.87509

 

Absolute SE 0.87509

 

Coef_G relative

0.86

     

Coef_G absolute

0.85

     
  1. Variance error of the mean for levels used 0.03283
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