Final answer:
The standard deviation of the data values is found by taking the square root of the variance, which is 324. The square root of 324 is 18, making the standard deviation 18. Option C
Step-by-step explanation:
The standard deviation is calculated as the square root of the variance. Since the variance of the data values in the sample is given as 324, we can determine the standard deviation by taking the square root of the variance. Therefore, the calculation to find the standard deviation (s) would be sqrt(324) which equals 18.
Standard deviation is a measure of dispersion or variability around the mean, and it is expressed in the same units as the data. Option C