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.
History & Culture. On the morning of December 7, 1941, the Japanese launched a surprise air attack on the U.S. Naval Base at Pearl Harbor in Hawaii. After just two hours of bombing more than 2,400 Americans were dead, 21 ships* had either been sunk or damaged, and more than 188 U.S. aircraft destroyed.