Final answer:
The question lacks specific attendance data to calculate the mean absolute deviation of attendance at the 4 middle school dances, thus an accurate answer cannot be provided.
Step-by-step explanation:
The question given does not provide specific attendance data for the calculation of the mean absolute deviation of attendance at the 4 middle school dances. Mean absolute deviation (MAD) is a measure of variability that indicates the average distance between each data point and the mean of the dataset. To calculate MAD, one must follow these steps:
- Calculate the mean (average) of the dataset.
- Subtract the mean from each data point and take the absolute value of each difference.
- Find the average of these absolute values to get the MAD.
Without the attendance numbers for the dances, it is not possible to perform this calculation or select the correct answer from options A, B, C, or D. Hence, an accurate answer cannot be provided based on the information given in the question alone.