Math Problem Statement
Solution
To determine the correct measurement and uncertainty of the diameter of the solid sphere, we need to follow these steps:
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Calculate the mean diameter (): where are the individual measurements and is the number of measurements.
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Calculate the standard deviation ():
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Determine the standard error ():
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Express the measurement with the uncertainty.
First, we find the mean diameter:
Next, we calculate the standard deviation:
Then, we determine the standard error:
Thus, the correct way to write the diameter with its uncertainty is:
So the correct answer is:
Do you want any further details or have any questions?
Here are 5 related questions for further practice:
- How would the mean diameter change if the measurement 8.15 cm was recorded as 8.20 cm?
- Calculate the mean diameter and uncertainty if a sixth measurement of 8.05 cm was added.
- What is the significance of using the standard error in reporting measurements?
- Explain why the standard deviation is divided by the square root of the number of measurements to find the standard error.
- How would the result change if one of the measurements was significantly different, such as 8.50 cm?
Tip: When calculating the standard deviation, make sure to use the correct formula for the sample standard deviation, especially when working with a small number of measurements.
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Math Problem Analysis
Mathematical Concepts
Measurement
Uncertainty
Standard Deviation
Mean
Formulas
Mean (x̄) = Σx / n
Standard deviation (s) = sqrt(Σ(x - x̄)^2 / (n - 1))
Standard error (SE) = s / sqrt(n)
Theorems
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Suitable Grade Level
High School
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