Which Has the Effect of Reducing Variance

question 56

Multiple Choice

Which has the effect of reducing variance?

• A)​random assignment
• B)​matched assignment
• C)holding variables constant
• D)​random selection

---

Definitions:

Acute

Acute refers to conditions or diseases that have a sudden onset and severe symptoms but are usually of short duration.

Ornithosis

An infectious disease also known as psittacosis, contracted from birds, particularly parrots, pigeons, and poultry.

Psittacosis

An infectious disease primarily transmitted to humans from birds, particularly parrots, caused by the bacterium Chlamydia psittaci.

Parrot Fever

Also known as Psittacosis, an infectious disease transmitted to humans by birds, particularly from the parrot family.