Final answer:
The Mean Absolute Deviation (MAD) cannot be calculated without the specific data values, and thus the correct answer cannot be determined from the given information.
Step-by-step explanation:
The question pertains to the calculation of the Mean Absolute Deviation (MAD), which is a measure of variability in a dataset. To compute the MAD, one must follow multiple steps: determine the mean (average) of the dataset, calculate the absolute values of the deviations from the mean for each data point, and then find the average of these absolute deviations. Unfortunately, without the provided dataset above 'the data' in the prompt, it is not possible to compute the MAD or to confirm which of the given responses (1.28, 8.66, 3.33, 2.75) is correct. An accurate answer requires the specific numerical values that are missing from the prompt.