Interpreting + Creating Graphs



Introduction to our WebQuest

Scientists use graphs to represent the data they collect during research.  By organizing the data in a more visual way, they can learn more than they would if just looking at a data table.  There are several ways scientists can visually or "graphically" represent thier data.  Line Graphs, Bar graphs and Pie Charts, are the primary types of graphs used by scientists.  To find out more about how to choose and how to use these types and other types of graphs go to:

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Types of Graphs

  Your Assignment

Today you will complete two tasks.  First you will take a look at some examples of graphs and explain or interpret them in you own words.  This is one way scientists draw conclusions from data.

Next you will create you own graph using real time data.  Real time data refers to measurements that are taken daily, hourly, or even every minute.  You can see this type of data posted on the world wide web.  After creating your graph you will interpret it by answering guiding questions.

Task 1

Let's look at some examples of graphs.  Prepare your worksheet then visit the page below to answer questions     1 -9.  Interpret This!

Task 2

Now we will Look at some real time data.  The National Weather Service has a site where you can see the local weather for the past 24 hours.  When you visit the site below you must look for the data table with the heading 24 Hour Summary.  When you find it pay special attention to the columns Time, Temperature, and Pressure (inches).                                        

Your Assignment is to create a double line graph using the Time, Temperature and Pressure (inches).  This will show us how these two factors change over 24 hours.   (Temperature vs Pressure) Hint: Plot temperature then plot pressure.

You may use graph paper and color pencils to create you graph or if you have practiced enough, you may use Microsoft Excel.  Remember if you use MS Excel, you must have it open at the same time you view the weather web page.

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Current Weather Conditions:
New York City, Central Park

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