Material is analyzed for weight in grams from three vendors-A, B, C- by three different inspectors –1, 2, 3- and using three different scales 1, 2, 3. The experiment is set up on a Latin square plan with results as follows:   Scale Inspector Vendor Weight 1 1 A 15 1 2 C 9 1 3 B 14 2 1 C 13 2 2 B 11 2 3     3 1 B 16 3 2 A 10 3 3 C 11 (ii) Perform pairwise comparison for the means of the inspectors using Duncan’s multiple range test method. . Draw lines below the inspectors labels, joining pairs of inspectors that are not significantly different.

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b) Material is analyzed for weight in grams from three vendors-A, B, C- by three different inspectors –1, 2, 3- and using three different scales 1, 2, 3. The experiment is set up on a Latin square plan with results as follows:

 

Scale Inspector Vendor Weight
1 1 A 15
1 2 C 9
1 3 B 14
2 1 C 13
2 2 B 11
2 3    
3 1 B 16
3 2 A 10
3 3 C 11

(ii) Perform pairwise comparison for the means of the inspectors using Duncan’s multiple
range test method.
.
Draw lines below the inspectors labels, joining pairs of inspectors that are not
significantly different.
Inspector 1 Inspector 2 Inspector 3

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