Consider an experiment where 10 mice were exposed to radiation from cell phones and 10 were...
Consider an experiment where 10 mice were exposed to radiation from cell phones and 10 were not. Also assume that the mice were of 4 different breeds. Cancer rates were observed for the two groups. If it exists, which variable is the blocking factor? a. Breed b. whether or not the mice were exposed to cancer c. whether or not the mice got cancer d. no blocking effect
Homework Answers
In the experiment, blocking is the arranging of experimental units in groups (blocks) that are similar to one another and treatments are randomly assigned to blocks of subjects.
Here mice were of 4 different breeds.
Therefore, blocking factor might be the breed of mice.
The correct answer is:
a. Breed
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