The Marketing Department at ADEC, Inc. has surveyed the price of 12 products that compete directly with

Question:

The Marketing Department at ADEC, Inc. has surveyed the price of 12 products that compete directly with its own primary product, with the following results:
$122, 124, 127, 146, 125, 122, 134, 125, 123, 128, 126, 134
Compute the range, the MAD, the variance, and the standard deviation or the data. Interpret each of these measures of dispersion.