主题:【第六届原创】correlation test of ASTM F963-11 test using test method CPSC-CH-E1003-09.1

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correlation test of ASTM F963-11 test using test method CPSC-CH-E1003-09.1 



Object:  To perform reproducibility for test method CPSC-CH-E1003-09.1 for ASTM F963-11 between two performers

Sample:  CRM NIST 2582(coating sample)

Equipment: (1) Microwave digestion oven

(2) Inductively Coupled Argon Plasma spectrometer

Procedure: Six trials were performed by two technicians compliance GC051.TP,

          acquiring results as below.

Conducted by:  A)XXX

              B) YYY

Data:

Trial

Total lead Result (ppm)

(A)

(B)

1

210

203

2

213

209

3

209

202

4

207

204

5

211

209

6

206

212

Mean

209.3

206.5

S.D.

2.58

4.04

F

2.44

F0.05,5,5

5.05

t

1.33

t0.05,10

2.23



According to the equation:

      F = , where S=standard deviation

  when (f1=n1-1=5, f2=n2-1=5 and a=0.05), F0.05,n1-n2=F0.05,5,5 =5.05 could be found from distribution critical value table, as F<F0.05,5,5, t-test could be drawn.

t = , where =mean value, n=n1=n2=trials

when (f=n1+n2-2=10, af=0.05), t0.05,10 =2.23 could be found from distribution critical value table.

Criteria:     The F should be less than Fcritical and t should be less than tcritical

Conclusion:  The correlation test between CWZ and WZD were satisfactory.

Prepared by:  _____________                  Date:  ______________

Checked by: ­­­­­ _____________                  Date:  ______________
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小鬼当家
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实验室内部比对,做的不错啊,用到了F检验和t检验
依风1986
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原文由 小鬼当家(joyboy123) 发表:
实验室内部比对,做的不错啊,用到了F检验和t检验

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原文由 Ins_f44cb9ee(Ins_f44cb9ee) 发表:谁有免费的
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