Statistics Meeting Book (May 15, 2019)

Sample A: Report

AOAC International Interlaboratory Study Workbook

Version:

4.1

Blind (Unmatched) Replicates Study Reported Values

Seq.

Item

Symbol

Value 95% LCL 95% UCL

Name of study: Date of study: Sample/Matrix ID: Analyte:

NIST Cucuminoids

1-Apr-2018

A

Curcumin 1.00E-03

Factor for Units of measurement: Metamer to analyze (C or pC): True value (blank if not known):

pC

1.957030927

1 Total number of laboratories 2 Total number of replicates

p

9

Sum(n(L)) XBARBAR

27

3 Overall mean of all data (grand mean) 4 Repeatability standard deviation 5 Interlaboratory standard deivation 6 Bias estimate (Measured - True) DERIVED VALUES: 7 Reproducibility standard deviation 8 Root-mean-square-total-error 9 Repeatability relative standard deviation 10 Reproducibility relative standard deviation

1.9704 1.9384 2.0024 0.01024 0.00774 0.01514 0.04351 0.02939 0.08336

s(r) s(L)

b

0.0134

s(R) rmse

0.04470 0.0467

RSD(r) RSD(R)

11 HORRAT value

(RSD(r), RSD(R) and HORRAT are inappropriate for pC data, so are not shown.)

13

copyright 2018 by Least Cost Formulations, Ltd., all rights reserved.

Sample B data

AOAC International Interlaboratory Study Workbook

Version:

4.1

Blind (Unmatched) Replicates Data Sheet

NIST Cucuminoids

Name of study: Date of study: Sample/Matrix ID: Analyte:

4/1/2018

B

Curcumin

Factor for Units of measurement: Metamer to analyze (C or pC): True value (blank if not known):

1.00E-03 (% = 1E-2, mg/100g = 1E-5, ppm = 1E-6, ppb = 1E-9, etc.)

pC (Enter C or pC)

pC

0.0851

pC log10 offset or zero:

0.0000 (to avoid zero argument)

INSTRUCTIONS:

1. Enter information in YELLOW, boxed cells ONLY! 2. Leave unused cells empty. 3. Do NOT delete or insert Rows or Columns! 4. To remove data, select the range of cells and press the "Delete" key. 5. The worksheet is protected: To paste values from another sheet, use Edit|Paste Special|Value

DATA TO BE ANALYZED (C or pC metamer):

RAW DATA (C metamer):

Replicate Replicate Replicate Replicate Replicate

Actual

Replicate Replicate Replicate

Laboratory

1

2

3

4

5

Lab

1

2

3

1 2 3 4 5 6 7 8 9

0.0956 0.0600 0.0992 0.0913 0.1042 0.1278 0.1161 0.0695 0.0750

0.1248 0.1007 0.0627 0.0955 0.1055 0.1111 0.0973 0.0622 0.0708

0.1360 0.0731 0.1223 0.0788 0.1074 0.1143 0.1126 0.0598 0.0656

O404 802.471 750.265 731.094 O407 871.000 793.000 845.000 O416 795.730 865.570 754.590 O419 810.320 802.590 834.080 O433 786.732 784.393 780.973 O437 745.100 774.300 768.600 O446 765.400 799.200 771.600 O449 852.110 866.660 871.360 O455 841.391 849.523 859.782

14

copyright 2018 by Least Cost Formulations, Ltd., all rights reserved.