In nonexperimental data the nonrandom assignment of treatment leads to what?

A. Mismeasured standard deviations
B. Loss of degrees of freedom
C. Selection Bias ? 0
D. Non-normal underlying population distribution


Answer: C

Biology & Microbiology

You might also like to view...

The phenotypic changes shown in the figure above represent



A. punctuated equilibrium.
B. horizontal gene transfer.
C. gradualism.
D. speciation based on sexual selection.

Biology & Microbiology

Much of the control of the digestive system originates in the neuron networks of the submucosa

Indicate whether the statement is true or false.

Biology & Microbiology

Endophytes that colonize leaves to feed on the dead tissue are examples of

A. decomposers. B. detritovores. C. producers. D. herbivores. E. carnivores.

Biology & Microbiology

The last place that pressure or sound waves pass

through in hearing is the a. middle ear. b. tympanic membrane. c. oval window. d. round window. e. tectorial membrane.

Biology & Microbiology