รายงานสำรวจธุรกิจทางการค้าและธุรกิจทางการบริการ พ.ศ. 2567

2. The estimation of variance of estimated total The estimated variance of the estimated total number of the characteristic X of the establishments for the k size, j activity was based on the formula : � ( � ) = ( − ) 2 where 2 = 1 −1   �∑ 2 =1 − �∑ =1 � 2 � 3. The estimation of coefficient of estimated variation of estimated total The estimated coefficient of estimated variance of estimated total number of the characteristic X of the establishments for the k size, j activity was based on the formula: ( � ) = � � ( � ) � x 100 % ---------------------------------------- 112