Exact or even close population counts are not known. It is thought that Pompeii had a population somewhere between 12,000 and 15,000 and Herculaneum a population between 4,000 and 5,000. Very few remains have been found within Herculaneum. Most of the remains have been found on the beach.
Independence. An independent variable is one is manipulated by the researcher. It is like the knob on a dial that the researcher turns. In graphs, it is put on the X-axis. A dependent variable is one which changes as a result of the independent variable being changed, and is put on the Y-axis in graphs.ndependence. An independent variable is one is manipulated by the researcher. It is like the knob on a dial that the researcher turns. In graphs, it is put on the X-axis. A dependent variable is one which changes as a result of the independent variable being changed, and is put on the Y-axis in graphs.
In experiments, these are called dependent and independent variables respectively. When a researcher gives an active drug to one group of people and a placebo, or inactive drug, to another group of people, the independent variable is the drug treatment.n a descriptive study, the researcher would examine how diabetes (a variable) is related to a person's genetic heritage (another variable). Case example of descriptive study variables Variables are important to understand because they are the basic units of the information studied and interpreted in research studies.