Independent variables are predetermined by the experimenter and can be manipulated to change the measured dependent variable. Independent variables are generally graphed on the x-axis, while dependent variables are generally graphed on the y-axis. In this question, time is the independent variable and displacement is the dependent variable. The experimenter can select sampling times, but cannot necessarily predict the displacement that will be measured at each point.
This defines time as the independent variable. The independent variable is controlled by the experimenter, while the dependent variable will fluctuate based on independent variable inputs. The independent variable is always displayed on the x-axis of a graph, while the dependent variable appears on the y-axis.
Time is a common independent variable, as it will not be affeced by any dependent environemental inputs. Time can be treated as a controllable constant against which changes in a system can be measured.
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Possible Answers: Neither variable is independent. Correct answer: Time. Explanation : An independent variable is manipulated by the experimenter. In the graph, the independent variable will be graphed on the x-axis. Report an Error. When looking at velocity in terms of distance and time, what is the independent variable?
Possible Answers: Time. Explanation : There are a few ways to think of this question. Imagine that we want to make a graph of the amount of rainfall that occurs at different times of year. Rainfall depends on time of year, but time of year does not depend on rainfall.
Therefore, rainfall is the dependent variable and time of year is the independent variable. In some graphs, you may have more than one dependent variable, but never more than one independent variable. For example, you may overlap plots of rainfall in the desert and rainfall in the tropics against time of year, or you could graph inches of rainfall in and against time of year. The independent variable belongs on the x-axis horizontal line of the graph and the dependent variable belongs on the y-axis vertical line.
The x and y axes cross at a point referred to as the origin , where the coordinates are 0,0. In graphs with only positive values for x and y, the origin is in the lower left corner.
Each axis needs a scale to show the range of the data on that axis. The low end of the scale may be zero or a round number value slightly smaller than the smallest data point. The high end of the scale is usually a round number value slightly larger than the largest data point. The scale is measured off in major and minor tick marks. Typically the scale runs from low to high in easily counted multiples like 10s, 50s, s, etc.
When graphs are compared side-by-side, consider scaling them to the same data range to make comparisons easier. Each axis needs a descriptive axis label indicating which variable is represented.
For example, the y-axis label might read "Total Rainfall" and the x-axis label might read "Month". Lab 2 Exercises 2. You are testing the toxicity of a new drug. You administer different doses to groups of mice and determine the percentage of the group that died as a result.
You are following the crime rate in Columbus, MS, over the past year. You are counting the number of crimes in each month. You take all the crimes in Columbus, MS, in the past year and classify them according to type murder, robbery, assault, etc. You are comparing three different cold remedies. You have volunteers with colds take one of the remedies and you measure how much longer the cold lasts after taking the medicine.
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