Question

What Experimental design is mostly preferred for lab experiment and why?

Answer 1

Explanation:

In lab experiments usually we used CRD if all experimental uints are in the same conditions and there is not any restriction in randomization of experimental uints. using CRD or CRBD is based on the randomization that was used.

In a completely randomized design, treatment levels or combinations are assigned to experimental units at random. This is typically done by listing the treatment levels or treatment combinations and assigning a random number to each. By sorting on the random number, we produce a random order for application of the treatments to experimental units.but In a completely randomized block designis there is restriction in the randomization process to form blocks. Blocks are usually set up at right angles to suspected gradients in variation. Within a block we want all the treatment levels or treatment combinations to be represented