In this experiment you want to figure out whether applying pesticide in your orc

Question

In this experiment you want to figure out whether applying pesticide in your orchard will impact the pollinating insects. And here we'll spice things up a bit: you have 6 fields, each containing 3 plots corresponding to 3 levels of pesticide application (low, medium, high). Each plot contains 10 fruit trees. Your Y variable is whether or not a given tree is producing fruits (hence has been pollinated).

Match the following X variables to their effect type: (Random Effect, Fixed Effect, or No effect)

-Field  (Random Effect, Fixed Effect, or No effect)

-Pesticide  (Random Effect, Fixed Effect, or No effect)

-Each Tree (Random Effect, Fixed Effect, or No effect)

Explanation / Answer

Field  (Random Effect, Fixed Effect, or No effect)

Ans: Field is a Fixed Effect because these 6 fields are not select from a population of filed.

-Pesticide  (Random Effect, Fixed Effect, or No effect)

Ans: Pesticide also Fixed Effect because its three level do not select from the population of pesticidet. It study effects of particular three perticide only.

-Each Tree (Random Effect, Fixed Effect, or No effect).

Each Tree is a random variable whereas and it has no effect. Because Y variable is whether or not a given tree is producing fruits are response (dependence variable in this model).

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