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.
In his appendix on casualty figures, he reviews a number of estimates of those that were killed under Stalin, and calculates that the number of executions 1936 to 1938 was probably about 1,000,000; that from 1936 to 1950 about 12,000,000 died in the camps; and 3,500,000 died in the 1930-1936 collectivization.