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 of these events occurred on December 7th. It was on December 7th, 1941 that 353 Japanese bombers attacked the United States naval base at Pearl Harbor, destroying 19 ships, 188 aircraft and killing over 2,000 Americans.It was this act that drove the United States into World War II.A date which will live in infamy. On this day, in an early-morning sneak attack, Japanese warplanes bomb the U.S. naval base at Oahu Islandâs Pearl Harborâand the United States enters World War II. President Roosevelt and Secretary of State Cordell Hull knew a Japanese attack was imminent.ll of these events occurred on December 7th. It was on December 7th, 1941 that 353 Japanese bombers attacked the United States naval base at Pearl Harbor, destroying 19 ships, 188 aircraft and killing over 2,000 Americans.