Consumer Packaging and Labelling Regulations (C.R.C., c. 417)

Regulations are current to 2012-05-02

SCHEDULE II

(Section 39)

PART I

SAMPLES

Column IColumn II
ItemNumber of Units in the LotMinimum Number of Units in the Sample
1.from 2 to 10All the units in the lot
2.from 11 to 12825% of the units in the lot, rounded up to the next whole number, but not less than 10
3from 129 to 4 00032
4.from 4 001 to 8 00064
5.from 8 001 to 12 00096
6.more than 12 000125

PART II

FORMULA FOR DETERMINING THE WEIGHTED AVERAGE QUANTITY OF THE UNITS IN A SAMPLE

For the purposes of paragraph 39(4)(a), the formula for adjusting the sample mean to determine the weighted average quantity of the units in the sample is as follows

Formula for adjusting the sample mean to determine the weighted average quantity of the units in the sample

where

Xa 
is the weighted average quantity of the units in the sample
x 
is the sample mean calculated as follows:

x = ∑x ÷ n

∑x 
is the sum of the net quantities of all units in the sample
t 
is the value determined in accordance with Part III for the selected sample size
n 
is the number of units in the sample
s 
is the standard deviation of the sample, calculated as follows
Formula for the standard deviation of the sample
∑(x-x)2 
is the sum of the squared differences between the sample mean and the net quantity of each unit in the sample.

  • Return to footnote *The value of (t ÷ √n) may, instead of being calculated in accordance with this Part, be determined using the applicable value set out in Column III of the table to Part III

PART III

TABLE FOR VALUES OF t AND (t ÷ √n)

Column IColumn IIColumn III
Sample SizetFootnote *(t ÷ √n)Footnote *
263.65745.01

Linear Interpolation of Values

Where a sample size is selected that is not listed in Column I of this table and lies between 32 and 125, the value of t will be determined by linear interpolation as follows:

Formula for the value of t determined by linear interpolation where the sample size is not given in Column I of the Table For Values of t and (t/the square root of n) “in PART III and lies between 32 and 125”

where

a 
is the value of t for the closest sample size below the selected sample size
b 
is the value of t for the closest sample size above the selected sample size
c 
is the result of 120 divided by the closest sample size below the selected sample size
d 
is the result of 120 divided by the closest sample size above the selected sample size
e 
is the result of 120 divided by the selected sample size
39.9255.73
45.8412.92
54.6042.06
64.0321.65
73.7071.40
83.4991.24
93.3551.12
103.2501.03
113.1690.955
123.1060.897
133.0550.847
143.0120.805
152.9770.769
162.9470.737
172.9210.708
182.8980.683
192.8780.660
202.8610.640
212.8450.621
222.8310.604
232.8190.588
242.8070.573
252.7970.559
262.7870.547
272.7790.535
282.7710.524
292.7630.513
302.7560.503
312.7500.494
322.7460.485
642.6570.332
962.6340.269
1252.6150.234

  • Return to footnote *Where all units in a lot are selected to constitute a sample, zero shall be used as the value of t and (t ÷ √n).

PART IV

MINIMUM NUMBER OF UNITS FOR THE PURPOSES OF PARAGRAPH 39(4)(b)

Column IColumn II
ItemSample SizeMinimum Number of UnitsFootnote *
1.from 2 to 81
2.from 9 to 202
3.from 21 to 323
4.from 33 to 504
5.from 51 to 655
6.from 66 to 806
7.from 81 to 1027
8.from 103 to 1258

  • Return to footnote *Minimum number of units in the sample that results in the lot not meeting the requirements of the Act and these Regulations respecting the declaration of net quantity.

  • SOR/89-571, s. 4.