OMB Meeting Book_9-11-14

9/10/2014 Copyright 2006,2012 by AOAC International, all rights reserved.

AOAC International Interlaboratory Study Workbook

Version:

2.1

Statistical Outliers Removed Blind (Unpaired) Replicates

AOAC 2011.18 Determination of Myo-Inositol - Unbound

Study name: Study date:

7/24/2014

Study Reported Values

Value

Seq.

Item

Symbol

SRM 1849a

E29JVLV D04HTCVV CONTROL 1172572116 117257651Z

BLANK

00412RF00 00403RF00

Sample ID:

8 a

8 b

8 c

8 d

9 b

Total number of laboratories Total number of replicates

p

1 2 3 4 5 6 7 8

10 22

10 22

10 22

9

Sum(n(L)) XBARBAR

16

18

18

20

18

20

Overall mean of all data (grand mean) e Repeatability standard deviation Reproducibility standard deviation Repeatability relative standard deviation Reproducibility relative standard deviation

4.2276 0.0660 0.1087

7.1970 0.0455 0.1853

3.8323 0.0368 0.0892

3.1110 0.0899 0.3889

3.1705 0.0582 0.0910

5.0462 0.0233 0.1088

5.1304 0.0950 0.2771

412.2442 11.3190 11.3709

4.2177 0.1273 0.3051

s(r) s(R)

RSD(r) RSD(R)

2.75 2.77

3.03 7.26

1.56 2.57

0.63 2.57

0.96 2.33

2.92

1.84 2.87

0.46 2.15

1.85 5.41

12.61

HORRAT value

0.43

0.80

0.28

0.31

0.25

1.32

0.30

0.24

0.61

a One laboratory excluded - Failed Cochran and Single Grubbs Test b One laboratory excluded - Failed Cochran Test c One laboratory excluded - Failed Double Grubbs Test d Two laboratories excluded - Failed Cochran and Single and Double Grubbs Tests e Overall mean in mg/100g RTF for all samples except SRM 1849a. SRM 1849a overall mean in mg/kg powder.

Study name: AOAC 2011.18 Determination of Myo-Inositol - Phosphatidylinositol Study date: 7/24/2014

Study Reported Values

Seq.

Item

Symbol

Value

Sample ID:

SRM 1849a

E29JVLV D04HTCVV CONTROL 1172572116 117257651Z

BLANK

00412RF00 00403RF00

8 a

1 2 3

Total number of laboratories Total number of replicates

p

9

9

8

9

9

8

9

9

Sum(n(L)) XBARBAR

18

20

18

18

20

20

18

20

20

Overall mean of all data (grand mean) b

9.2633

2.0962

0.6667

0.3476

0.2139

1.6418

0.3048

0.3282

0.0000