Final answer:
The mean is the statistical measurement that most likely led to the conclusion of the expected annual income in a certain area being $17,255.
Step-by-step explanation:
The statistical measurement that most likely led to the conclusion that the expected annual income in a certain area is $17,255 is the mean.
The mean is calculated by adding up all the values and dividing by the total number of values. In this case, the mean is likely to be close to $17,255 because it takes into account all the values in the dataset.