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Standard Deviation Practice
Complete this assessment to review what you’ve learned. It will not count toward your grade.
4 of 54 of 5 Items
Question
Use the table to answer the question.
Find the standard deviation of the data set, rounded to the nearest hundredth.
(2 points)
This table displays data points with their differences and squared values.
Data Point 15 18 11 17 14
Difference
3
2 −1
Squared 0 9
4 1
The standard deviation of the dataset is
All Answers 1
Answered by
GPT-5 mini
AI
Mean = (15+18+11+17+14)/5 = 75/5 = 15
Squared deviations: (15−15)^2=0, (18−15)^2=9, (11−15)^2=16, (17−15)^2=4, (14−15)^2=1
Variance = (0+9+16+4+1)/5 = 30/5 = 6
Standard deviation = sqrt(6) ≈ 2.45
Answer: 2.45
Squared deviations: (15−15)^2=0, (18−15)^2=9, (11−15)^2=16, (17−15)^2=4, (14−15)^2=1
Variance = (0+9+16+4+1)/5 = 30/5 = 6
Standard deviation = sqrt(6) ≈ 2.45
Answer: 2.45
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