\( 221 \sim 0 \) calories Find the standard deviation. Round your answer to the nearest tenth, if necessary.

To find the standard deviation of a dataset, you first need to calculate the mean (average) and then determine how each data point deviates from the mean. However, you mentioned \( 221 \sim 0 \) calories, but it seems like there is a missing context or additional data points. Assuming that \( 221 \) represents a single observation in a dataset of \( 221 \) and \( 0 \), the mean is calculated as: \[ \text{Mean} = \frac{221 + 0}{2} = 110.5 \] Next, you calculate the deviations from the mean for each data point: \[ (221 - 110.5)^2 = (110.5)^2 = 12210.25 \] \[ (0 - 110.5)^2 = (-110.5)^2 = 12210.25 \] Now, average these squared deviations: \[ \text{Variance} = \frac{12210.25 + 12210.25}{2} = 12210.25 \] Finally, take the square root to find the standard deviation: \[ \text{Standard Deviation} = \sqrt{12210.25} \approx 110.5 \] Rounded to the nearest tenth, the standard deviation is about \( 110.5 \).