Question

What type of design is the randomized block design in statistical analysis?

a) Experimental design
b) Observational design
c) Quasi-experimental design
d) Correlational design

Answer 1

In statistical analysis, the randomized block design is an experimental design, used to reduce variability among experimental units and enhance the detection of treatment effects.

Step-by-step explanation:

The type of design that the randomized block design represents in statistical analysis is experimental design. A randomized block design is used in experiments to control for the variability among experimental units by grouping similar ones together into blocks. Within each block, treatments are randomly assigned to the units. This technique reduces the variability within treatment groups and increases the experiment's power to detect differences among treatments. In contrast, observational designs observe subjects without manipulation, quasi-experimental designs lack full randomization or control, and correlational designs investigate the relationship between variables without any intervention.