By Ashley Crossman. 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.
The estimated number of deaths is 150-300,000, mainly Jews. Chelmno, also known as Kulmhof, was a small town roughly 50 miles from the city of Lodz. It was here that the first mass killings of Jews by gas took place as part of the Final Solution.. The murder process was set up by a Sonderkommando, under the command of Herbert Lange.
Introduction. Records show that 7,849 people died in New Orleans in 1853 due to yellow fever. The total between 1817 and 1905 was in excess of 41,000. As yellow fever was very easy to diagnose (in the latter phases of the sickness at least), these figures exclude other causes of death. Although this year represents the highest single-year figures, death tolls in previous and subsequent years throughout the 19th century often approached the levels of 1853.