Calculate sample size for survey in data science.
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Data Science — Survey: Variability Calculator
Quick answer
For Data Science — Survey: Variability Calculator: if standard deviation is 12 and mean is 80, the coefficient of variation is 15%.
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Coefficient of variation
15%
The standard deviation shown as a percentage of the mean, so spread can be compared fairly across data sets with different scales.
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Coefficient of variation
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See how the result changes
Each table re-runs this calculator with one value changed and everything else left as it is.
Coefficient of variation by standard deviation
If standard deviation goes from 12 to 18, coefficient of variation changes from 15% to 22.5% (+50%).
| Standard deviation | Coefficient of variation |
|---|---|
| 6 | 7.5% |
| 9 | 11.25% |
| 12start | 15% |
| 18 | 22.5% |
| 24 | 30% |
Coefficient of variation by mean
If mean goes from 80 to 120, coefficient of variation changes from 15% to 10% (−33%).
| Mean | Coefficient of variation |
|---|---|
| 40 | 30% |
| 60 | 20% |
| 80start | 15% |
| 120 | 10% |
| 160 | 7.5% |
DATA SCIENCE GUIDE
A quick guide to Data Science — Survey: Variability Calculator
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How to Use the Data Science — Survey: Variability Calculator
1
Enter Standard deviation
Provide your standard deviation.
2
Enter Mean
Provide your mean.
3
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What is Data Science — Survey: Variability Calculator?
This data science tool works out your coefficient of variation instantly, so you don't have to do the math by hand.
“One quick calculation, so you always know your coefficient of variation before you decide.”
What Affects Your Coefficient of variation
Your coefficient of variation depends on the values below.
Standard deviation
Changing your standard deviation changes your coefficient of variation.
Mean
Changing your mean changes your coefficient of variation.
Example Result
Here's what you can expect from a data science — survey: variability calculator calculation:
- Standard deviation
- 12
- Mean
- 80
- Coefficient of variation
- 15%
Frequently Asked Questions
- How does standard deviation affect coefficient of variation?
- If standard deviation goes from 12 to 18, coefficient of variation changes from 15% to 22.5% (+50%).
- How does mean affect coefficient of variation?
- If mean goes from 80 to 120, coefficient of variation changes from 15% to 10% (−33%).
- How to calculate data science — survey: variability calculator?
- Fill in standard deviation and mean in the Data Science — Survey: Variability Calculator above and your coefficient of variation is calculated instantly. Change any value to see how the result responds.
- What does an example data science — survey: variability calculator calculation look like?
- For Data Science — Survey: Variability Calculator: if standard deviation is 12 and mean is 80, the coefficient of variation is 15%.
- Is this calculator free to use?
- Yes — every calculator on this site is completely free, with no sign-up or account required.
- How accurate is this calculator?
- It uses the standard formula and calculates on our server for every request, so results are precise for the values you enter.
- Is my data saved anywhere?
- No. Nothing you enter is stored or sent anywhere unless you choose to share a link with your values included.
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