Question:
The method of confounding is a device to reduce the size of :
The method of confounding is a device to reduce the size of :
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Confounding lets you split a large set of treatment combinations into smaller homogeneous groups by sacrificing one interaction.
Updated On: Jul 4, 2026
- Experimental materials
- Replications
- Blocks
- Treatments
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The Correct Option is C
Solution and Explanation
Step 1: In a factorial experiment the number of treatment combinations can be large, and it may not be practical to keep all of them in one homogeneous block.
Step 2: Confounding is the technique of deliberately mixing up certain higher order interaction effects with the differences between blocks, so that those interactions cannot be estimated separately from block effects.
Step 3: By sacrificing information on the confounded interaction(s), the treatment combinations can now be split into smaller, more manageable and homogeneous blocks.
Step 4: So the direct purpose of confounding is to allow a reduction in block size while still keeping the design in a single replicate or a small number of replicates.
Final Answer: (C) Blocks.
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