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The question asks to calculate the coefficient of variation (Koefisien Variasi) based on the given dataThe question asks to calculate the coefficient of variation (Koefisien Variasi) based on the given 

- Mean (\(\overline{x}\)) = 76
- Standard deviation (\(\sigma\)) = 9

The formula for the coefficient of variation (CV) is:

\[
CV = \left( \frac{\sigma}{\overline{x}} \right) \times 100
\]

Now, let's substitute the values:

\[
CV = \left( \frac{9}{76} \right) \times 100
\]

I will calculate this now.The coefficient of variation (CV) is approximately \(11.84\%\). Therefore, the correct answer is:

**c. 11.8%**

Would you like any more details or have questions?

Here are 5 related questions you may find useful:
1. What is the significance of the coefficient of variation in statistics?
2. How is the coefficient of variation used in comparing datasets?
3. Can the coefficient of variation be negative?
4. How does the standard deviation affect the coefficient of variation?
5. How can we interpret the coefficient of variation in practical terms?

**Tip:** The coefficient of variation is especially useful when comparing variability between datasets that have different units or vastly different means.

Dari hasil tes matematika di SMK Yaspia diketahui nilai rata-ratanya adalah 76, dengan simpangan baku 9, maka koefisien variasinya adalah.... a. 13,8% b. 12,8% c. 11,8% d. 10,8% e. 9,8%

Learn how to calculate the coefficient of variation with a mean of 76 and a standard deviation of 9. The coefficient of variation formula is used to compare variability between datasets. Suitable for high school students in grades 10-12.

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