A scientist is hoping to compare the mean levels of DDT toxin found in three species of fish in a local river. He randomly samples 50 of each species to use in the analysis. For each fish, he
Measures the amount of DDT toxin present. Ideally he will be able to rank the species based on the
Mean level of toxin found in each of the three species. How many factors are present in this study?
A)3
B)50
C)6
D)1

Question

Quizplus · Accepted Answer

The only factor in this study is the species of fish, as it is the variable that the scientist is changing to observe the effect on the levels of DDT toxin. The number of samples or the amount of toxin are not factors; they are outcomes or measurements related to the single factor of species.

A Scientist Is Hoping to Compare the Mean Levels of DDT