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Duke University

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Unweighted GPA:** 3.7**

1.0

4.0

SAT: **720 math**

200

800

| **800 verbal**

200

800

Low accuracy (4 of 18 factors)

Hey fellow students, I've come across the terms 'dependent' and 'independent variables' quite often when studying for math. Can anyone give me an easy explanation of these two, and might have tips on how to plot and interpret graphs with these variables?

6 months ago

Hey there! Sure, I'd be happy to help explain dependent and independent variables and give you some tips on graphing them.

In a given relationship between two variables, the independent variable is the one that you control or manipulate. It is often represented by the letter 'x' on the x-axis of a graph. The dependent variable, on the other hand, is the one that changes as a result of the independent variable. It's typically represented by the letter 'y' on the y-axis of a graph. Think of the dependent variable as being "dependent" on the independent variable.

When it comes to graphing these variables, here's a step-by-step guide to help you:

1. Identify the variables: First, determine which one is the independent variable (the one you control) and which is the dependent variable (the one that changes based on the independent variable). For example, in a graph showing the correlation between time spent studying and test scores, time spent studying would be the independent variable (x) and test scores would be the dependent variable (y).

2. Create a coordinate plane: To plot the data, you'll need a coordinate plane with an x-axis representing the independent variable and a y-axis representing the dependent variable. Label each axis with its corresponding variable.

3. Scale the axes: Determine the range of values for both variables and set up an appropriate scale for each axis. Make sure to include enough space to plot all of your data points.

4. Plot the data points: For each data point, find the corresponding x (independent variable) and y (dependent variable) values, and plot the point on the coordinate plane where those values intersect.

5. Analyze the graph: Once all the data points have been plotted, you can analyze the graph to look for trends or patterns. A linear relationship between the variables will result in a straight line, while a non-linear relationship will result in a curved line. The direction of the trend (positive, negative, or no correlation) will provide insight into how the dependent variable is affected by the independent variable.

Remember, practice makes perfect when it comes to graphing variables. As you continue to work with different data sets and become more experienced in identifying dependent and independent variables, interpreting and creating graphs will become much easier. Good luck with your math studies!

6 months ago

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