Question

The major functions of replication in Experimental Designs are A. To provide an estimate of experimental error, B. To reduce the experimental error, C. To increase the experimental error, D. Grouping of homogeneous experimental units into blocks, E. Random allocation of treatments.

• A. A, B and C Only
• B. C and D Only
• C. A and B Only
• D. D and E Only

Hint:

The three basic principles of experimental design are replication, randomization, and local control.

Answer 1

The Correct Option is C

Concept:
Replication is one of the basic principles of experimental design. It means repeating the treatments more than once.

Step 1: Check statement A.
Replication helps in estimating experimental error. \[ A \text{ is correct} \]

Step 2: Check statement B.
Replication reduces the effect of random variation and helps reduce experimental error. \[ B \text{ is correct} \]

Step 3: Check statement C.
Replication does not increase experimental error. It helps in reducing and estimating error. \[ C \text{ is incorrect} \]

Step 4: Check statements D and E.
Grouping homogeneous experimental units into blocks is the function of local control or blocking. Random allocation of treatments is related to randomization. \[ D \text{ and } E \text{ are not functions of replication} \] Thus, the correct statements are: \[ A \text{ and } B \] \[ \therefore \text{Correct Answer is (C)} \]