Question

Use this scenario to answer the next three questions.

R.A. Fisher, a famous statistician, describes a well-known design in his book, Design of Experiments. Five varieties of wheat were compared to determine which gave the highest yield in bushels per acre. Eight farms were available for planting. Each farm was divided into five plots. For each farm, the five varieties were randomly assigned to the five plots with one variety per plot. The varieties were planted on their assigned plots and their yields were measured and compared.

What type of study is this?

Answer 1

Answer: Experiment - randomized block design

Step-by-step explanation:

A randomized block design (RBD) is an experimental study where the scientist classifies subjects into different groups, denominated blocks. The subjects within each block are assigned to the different treatments, varieties of wheat in this example.

A randomized block design is effective when the subjects within blocks are comparable in how they influence the response variable but differ from other blocks.