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.
The following is a list of how many people were killed on Dec. 7, 1941 as a result of the Japanese attack on Pearl Harbor. US Navy: 2,008 KIAUSMC: 109 KIAUS Army: 218 KIACivilâ¦ians: 68 Total: 2,403 Close to 2/3 of those who died occurred in the first 15 minutes of the battle when the Oklahoma, Utah and the Arizona were bombed. In addition, 55 Japanese died, in addition to an unknown number of Japanese wounded. The US had 1,178 personnel wounded.