question 3 of 10\nthe purpose of blocking in ...
question 3 of 10\nthe purpose of blocking in experimental design is:\na. to keep the subjects from knowing if they are in the treatment group.\nb. to prevent response bias from entering into the experiment.\nc. to keep the experimenter from knowing which subjects are in the treatment group.\nd. to give the quarterback enough time to throw the ball.\ne. to control for multiple variables in an experiment.
Answer
# Brief Explanations:
Blocking in experimental design groups subjects with similar characteristics together. This helps in controlling for multiple variables that could affect the outcome, reducing variability within groups and increasing the precision of the experiment.
# Answer:
E. to control for multiple variables in an experiment.