Explain the Randomized Block Design

question 24

Multiple Choice

Explain the Randomized Block Design
-A farmer wishes to test the effects of a new fertilizer on her potato yield. She has four equal-sized plots of land-- one with sandy soil, one with rocky soil, one with clay-rich soil, and one with average soil. She divides each of the four plots into three equal-sized portions and randomly labels them A, B, and C. The four A portions of land are treated with her old fertilizer. The four B portions are treated with the new fertilizer, and the four C s are treated with no fertilizer. At harvest time, the potato yield is recorded for each section of land. What type of experimental design is this

• A) randomized block design
• B) completely randomized design
• C) matched-pairs design
• D) double-blind design

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