SOLUTION: A researcher studying sunflowers took a sample of sunflowers and measured the diameter of the flower in centimeters. Here are the measurements for the sample: 17 21 16 20

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Question 1019471: A researcher studying sunflowers took a sample of sunflowers and measured the diameter of the flower in centimeters. Here are the measurements for the sample:
17 21 16 20 12 18 15
Find the standard deviation of the data set. Round your answer to the nearest tenth.
I would really appreciate help on this question! I've been stumped for a few hours now... Thank you so much!

Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
I would use the formula for sample standard deviation:



where is the arithmetic mean of your sample data. So first, compute , then compute the inner summation to compute the sample SD.