Most TPSs use sophisticated mathematical models or statistical techniques

Suppose that the last four months of sales were 8, 10, 15, and 9 units, respectively. Suppose further that the last four forecasts were 5, 6, 11, and 12 units, respectively. What is the Mean Absolute Deviation (MAD) of these forecasts?

A) 2 B) -10 C) 3.5 D) 9 E) 10.5

Rhonda is buying a second home to use as income property. She is financing 75% of the home's $100,000 value. Her bank is loaning her the money for 10 years at an APR of 4.5%. How much are Rhonda's mortgage payments?

A) $441.28 B) $598.74 C) $777.28 D) $958.44 E) $1,014.33