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.
All together there were 94 ships docked at pearl harbor 49 ships were destroyed but the rest were damaged, and there was 45 left over. <br /> On December 7, 1941, the Japanese launched an attack on the US Naval Fleet stationed at Pearl Harbor, in Hawaii. A list of the ships sunk during the attack include: <br /> U.S.S.