Three-dimensional graphs are used to show the relationship between two or more independent variables and one dependent variable. The data for this activity was obtained from the Greenwood Partnership, an architectural and engineering firm located in Lynchburg, Virginia. The best way to visually represent data with three
variables (one dependent and two independent) is a three-dimensional graph. Three
dimensional graphs have three axes, the This activity introduces a second independent variable, the
type of use. We will be graphing the energy used for heating in addition to the energy
used for cooling in the hospital. We will still plot degree-days on the Using Excel (the TI-83 is not capable of producing 3-D graphs), generate a 3-D line graph of the energy consumed over time, for both the heating and cooling data. Then answer the questions at the end of this page. The data exists in two files; one is Excel Data format and one is Text format. Are there any patterns or trends that are present in the graph? What could be an explanation for these trends? Does the hospital use more heating or cooling? Why? What is the maximum amount of degree days of heating? of cooling? Original work on this document was
done by Central Virginia Governor's School students Patrick Burke, Rebecca Mispel, and
Jialu Li (Class of '99). Copyright © 1998 Central Virginia Governor's School for Science and Technology Lynchburg, VA |