Hi!
My science fair project board is due Nov. 4th and I am having difficulty figuring out how to apply my data in calculating the standard deviation.
My data consists of hue (degrees), saturation (%), and brightness (%) for four different colors of dye (red, purple, yellow, orange) on two types of fabrics (wool and silk). I also experimented with how metal salt mordants affect the dye colors so I have the same data set (hue, saturation, and brightness) for the same four dyes and same two fabrics using two different mordants (aluminum sulfate and ferrous sulfate). I did three trials for each.
Wool - No Mordant
Red - 3 trials, average
Purple - 3 trials, average
Yellow - 3 trials, average
Orange - 3 trials, average
Silk - No Mordant
Red - 3 trials, average
Purple - 3 trials, average
Yellow - 3 trials, average
Orange - 3 trials, average
Wool - Aluminum Sulfate
Red - 3 trials, average
Purple - 3 trials, average
Yellow - 3 trials, average
Orange - 3 trials, average
Silk - Aluminum Sulfate
Red - 3 trials, average
Purple - 3 trials, average
Yellow - 3 trials, average
Orange - 3 trials, average
Wool - Ferrous Sulfate
Red - 3 trials, average
Purple - 3 trials, average
Yellow - 3 trials, average
Orange - 3 trials, average
Silk - Ferrous Sulfate
Red - 3 trials, average
Purple - 3 trials, average
Yellow - 3 trials, average
Orange - 3 trials, average
THEN I exposed all my samples above to sunlight for a period of several weeks and measured the hue, saturation, and brightness for all trials listed above to determine colorfastness. So I have the same number of data sets listed above for the exposed samples.
In total, I have 48 averages (dye colors, exposed dye colors). QUESTION: HOW DO I ORGANIZE MY DATA AND CALCULATE THE STANDARD DEVIATION? WILL I HAVE MORE THAN ONE STANDARD DEVIATION?
My board is due Nov. 4, 2015.
Thank you!
Help! Standard Deviation Sci Fair Nov 4
Moderators: AmyCowen, kgudger, bfinio, MadelineB, Moderators
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- Posts: 13
- Joined: Fri Sep 18, 2015 4:23 pm
- Occupation: Student: 8th Grade Gifted
- Project Question: Organic/Inorganic Chemistry - Science Fair Project
- Project Due Date: October 1, 2015
- Project Status: I am conducting my research
Re: Help! Standard Deviation Sci Fair Nov 4
Hello. Please only post your question in one forum so that our experts will reply in a single location and can best answer your questions based on what has already been discussed. It sounds like you received a lot of great advice on your post in the Physical Science forum. Please refer to that thread. Thanks for using Science Buddies, and good luck!
Deana