Agricultural engineers randomly planted strawberry plants in one of two types of

Question

Agricultural engineers randomly planted strawberry plants in one of two types of soil. The plants were then randomly given one of three types of fertilizer (A,B,C). The goal was to investigate the effect of soil and fertilizer on plant yield.

a.) What is the experimental unit for this investigation?

b.) Is this study a designed experiment or an observational study?

c.) What are the factors?

d.) List the levels for each factor.

e.) List the treatments for this study.

f.) What is the response variable?

Explanation / Answer

a) The plants are the experimental units in this experiment. (Ans).

b) Since this one is a planned experiment to investigate the effect of soil and fertilizer on plant yield and experiment is conducted systematically, it is a designed experiment. (Ans).

c) Here the factors are the types of soil and types of fertilizer.(Ans).

d) Here soil has 2 levels and fertilizer has 3 levels (A, B aand C). (Ans).

e) The treatment is the fertilizer with three levels. (Ans).

f) The response variable is the yield of the plant. (Ans).

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