To calculate the standard deviation, you first need to find the variance. In your case, you have the variance as:
\[ \text{Variance} = \frac{2067.79}{24} \]
Calculating this:
\[ \text{Variance} = 2067.79 \div 24 \approx 86.1579 \]
Now that you have the variance, the standard deviation is the square root of the variance:
\[ \text{Standard Deviation} = \sqrt{\text{Variance}} = \sqrt{86.1579} \approx 9.29 \]
Thus, your standard deviation is approximately 9.29.