Random allocation by blocking method will be done as follows:
The researcher will divide the total sample size into smaller groups (groups of four) called blocks, considering that with a sample size of 70 and a quadruple block, an integer is not obtained, so we consider the number 72 and as a result we will have eighteen blocks. . The situations of placing people (four people) inside each block can be imagined and documented from the total number of samples from the intervention and control group
{ACAC, ACCA, CCAA, CAAC, AACC, CACA )then assign a number to each of these blocks .ACAC = 1, ACCA = 2, CCAA = 3CAAC = 4, AACC = 5, CACA = 6 )) We write the numbers on the balls of the same color and size and put them in the bag, and
The three-year-old then pulls a ball out of the bag and, after recording the number on the ball, returns it to the bag and pulls out the next ball. In this way, during the sampling, according to the order of the blocks and the number taken out of the bag, sampling will be done. It is necessary to explain that the previous block must be completed to complete the next block.