The Only Control Technique That Can Account for Both Known

question 53

Multiple Choice

The only control technique that can account for both known and unknown sources of extraneous variation ise.g., within designs require fewer participants, offer better control, but also may demand too much participant time and offer clues to the researcher's hypothesis) .

• A) precision control.
• B) matching by yoked control.
• C) random selection.
• D) random assignment.

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Definitions:

Agricultural Innovation

The process of introducing new ideas, methods, or devices to improve the efficiency and productivity of farming practices.

Raised Fields

Elevated areas of soil created for agricultural purposes, often found in flood-prone regions to improve drainage and soil fertility.

Reservoirs

Artificial or natural lakes used for the storage of water, often created by damming rivers for water supply, irrigation, or hydroelectric power.

Recordkeeping

The maintenance of records or documents that record significant events, transactions, or findings for future reference.