Council Directive of 20 January 1976 on the approximation of the laws of the Member States relating to the making-up by weight or by volume of certain prepackaged products (76/211/EEC) (c. 211)

[F1 ANNEX II U.K.

Textual Amendments

F1 Substituted by Commission Directive of 28 September 1978 adapting to technical progress the Annexes to Council Directives 75/106/EEC and 76/211/EEC on prepackaging (78/891/EEC).

2. REQUIREMENTS FOR CHECKING BATCHES OF PREPACKAGES] U.K.

2.3. Checking of the average actual contents of the individual prepackages making up a batch U.K.

2.3.2. If x_i is the measured value for the actual contents of the i-th item in the sample containing n items then: U.K.

2.3.2.1. the mean of the measured values for the sample is obtained by the following calculation: U.K.

2.3.2.2. and the estimated value of the standard deviation s by the following calculation: U.K.

• the sum of the squares of the measured values:

• the square of the sum of the measured values:

  then

• the corrected sum

• the estimated variance:

the estimated value of the standard deviation is: