Statistics Meeting Book (May 15, 2019)

C metamer: Data

AOAC International Interlaboratory Study Workbook

Version:

4.1

Blind (Unmatched) Replicates Data Sheet

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

JAOAC (2012) 95(2):411-418

3/1/2013

C02

OBPCP

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

1.00E-02 (% = 1E-2, mg/100g = 1E-5, ppm = 1E-6, ppb = 1E-9, etc.)

C (Enter C or pC)

(Not known)

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

0.095 0.090 0.096 0.092 0.096 0.098 0.097 0.087 0.085 0.095 0.095 0.094 0.102 0.105

0.096 0.073 0.096 0.091 0.096 0.097 0.097 0.087 0.084 0.096 0.093 0.098 0.103 0.101

1 2 3 4 5 8 9

0.095 0.096 0.090 0.073 0.096 0.096 0.092 0.091 0.096 0.096 0.098 0.097 0.097 0.097 0.087 0.087 0.085 0.084 0.095 0.096 0.095 0.093 0.094 0.098 0.102 0.103 0.105 0.101

11 12 13 14 16 18 19

10 11 12 13 14

7

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

C metamer: Check for outliers

Lab #2 is strong outlier. Removed in original study. We remove here. Cause: visually inhomogeneous with other data.

8

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