Definition: A control variable is a variable that is held constant in a research analysis.The use of control variables is generally done to answer four basic kinds of questions: 1.Is an observed relationship between two variables just a statistical accident? 2.efinition: A control variable is a variable that is held constant in a research analysis.
How Many People Died At Pearl Harbor. Those who have read about American history are acquainted with Japanese attacking the US naval base located at Pearl Harbor on 7th December 1941. The Americans were attacked unaware, without any warning by Japan. This resulted in loss of lives of 2,402 Americans and left around 1282 people injured.
There where 59 Japanese killed in Pearl Harbor, all members of the Imperial Japanese Navy. Nine were the crew of 5 Type A midget submarines (of the 10 crew one was captured). The remainder were crews from aircraft shot down in the attack or lost as a result of damage and unable to return to the carriers. From Britannica Concise Encyclopedia: (64)