ABSTRACT
The determinations of yield and impurity were both recorded to three significant figures but they have been rounded to whole numbers in Table
Examining the previous 50 batches 147 Table 9.1 Yield and impurity of 50 batches of pigment Batch Yield Impurity Batch Yield Impurity number number
1 88 5 26 88 2 2 92 8 27 87 5 3 88 5 28 89 1 4 92 4 29 89 4 5 91 7 30 90 2 6 87 6 31 92 3 7 88 4 32 88 1 8 91 7 33 90 5 9 93 6 34 93 3
10 89 5 35 91 6 11 92 7 36 91 3 12 90 5 37 86 2 13 91 3 38 87 4 14 94 2 39 89 4 15 95 3 40 88 5 16 89 4 41 91 2 17 95 6 42 90 5 18 93 3 43 86 7 19 94 2 44 88 6 20 89 1 45 89 3 21 90 4 46 91 5 22 88 3 47 88 4 23 87 1 48 90 2 24 92 3 49 89 3 25 90 4 50 92 5
9.1. This has been done to simplify the calculations and other data used in this book will be similarly rounded. In a real-life situation one would certainly not round off the data in this way.
