Positive correlation
yes
A variable is something which can change, that is have different values.The proper scientific terms for these are: Dependent and Independent variable. The independent variable is the thing that you vary during an experiment. The dependent variable is what changes as a result of that manipulation.A manipulated variable is the variable which you deliberately alter the value of. So, you will know the values of this variable before you do the experiment. This variable is also called the independent variable.A responding variable is the variable which you have to measure to get your results. So, you do not know the values of this variable until you measure it. This is also called the dependent variable.For example, to find out if your heart rate depends on exercise, you could do different amounts of exercise (the manipulated variable) and measure the heart rate (the responding variable).The above answer is well written, so I will just add a couple of examples.The standard linear equation is defined as 'y = mx + b'. y = 4x + 10, for example, could be charted on a Cartesian coordinates graph as a straight line that has a slope of 4 and a y-intercept of 10. In such linear equations, x would be described as the manipulated, or independent variable, while y would be the responding, or dependent variable.In another example suppose you are traveling in a car at 50 miles per hour. How far would you go if you traveled three hours? In this example, x would be the number of hours traveled, and y would be the total distance traveled in miles. The equation would be y = 50x. In this equation, x is the independent variable, and y is the dependent variable. By substituting 3 for x (because the question asked how far would you go in three hours), we can calculate that you would travel 150 miles. So the distance you travel (y) depends upon how long you traveled (x).
It is called a graph cut.Example: increments go from 0 straight to 40
The slope is -1. (30, 10) and (20, 20) are both (x, y) coordinates, and can both be plotted on a 2-D graph. For every point that you go forward, you also have to go 1 point down to meet both points.
The manipulated variable typically goes on the independent variable axis of a graph. This is because the manipulated variable is the one that is controlled or changed by the experimenter to observe its effect on the dependent variable.
The manipulated variable, also known as the independent variable, is typically plotted along the x-axis of a graph. This variable is controlled by the experimenter and is used to observe its effect on the responding variable, which is usually plotted on the y-axis.
a simple 2d xy line graph has only the possibility for 2 different variables (x and y). for a 3 variable graph you would have to go into a 3d xyz graph with each variable as x, y and z. it is possible to fit a line to this but for an easier analysis it is better to analyse the variables in pairs.
Positive correlation
If the two variables are directly proportional, then the slope can be any number,but the y-intercept has to be zero ... the line must go through the origin.
A discrete graph is one where one or both variables can only take a some values. These are usually integer values but need not be. For example, shoe sizes (in UK) go up in half units. A non-linear graph is one in which the points of the graph do not lie on a straight line.
The answer: Advantages: you will be able to see the exact numbers. Disadvantages: you wont be able to see were they would go on a graph
dependent variable always go on y.axis on the graph.
To graph points, use rise over run and go up and over on the graph
go to the top tab called "insert" then click graph and there you go
yes
The graph could go on forever while a data table only shows a part of the graph.