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Statistical Significance: Using a t-Test *

Time Required Short (2-5 days)
*Note: This is an abbreviated Project Idea, without notes to start your background research, a specific list of materials, or a procedure for how to do the experiment. You can identify abbreviated Project Ideas by the asterisk at the end of the title. If you want a Project Idea with full instructions, please pick one without an asterisk.


Before You Start: The sun has periods of increased, solar maximum, and decreased, solar minimum, sunspot activity. This 11-year cycle has effects on many types of space weather. Before starting this experiment you should read a bit about the sunspot cycle and determine where we currently are in the cycle. During a solar minimum you may need to rely on historical data (which we tell you how to obtain in the Experimental Procedure) to complete this project.

Sunspot activity has been monitored continuously since about 1700. The historical data shows that sunspot activity rises and falls in a roughly 11-year cycle. This project shows you how you can use a spreadsheet program to perform both graphical and statistical analysis to look for patterns in cyclical data. You'll learn how to use a t-test, which is a measure of statistical significance. Sunspot Cycles.

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Science Buddies Staff. "Statistical Significance: Using a t-Test" Science Buddies. Science Buddies, 30 June 2014. Web. 27 Mar. 2015 <http://www.sciencebuddies.org/science-fair-projects/project_ideas/CompSci_p032.shtml>

APA Style

Science Buddies Staff. (2014, June 30). Statistical Significance: Using a t-Test. Retrieved March 27, 2015 from http://www.sciencebuddies.org/science-fair-projects/project_ideas/CompSci_p032.shtml

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Last edit date: 2014-06-30

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