What is the average weight per shipment in the manifest (12, 7, 9, 15, 14 kg)?

What is the average weight per shipment in the manifest (12, 7, 9, 15, 14 kg)?

• A. 12 kg
• B. 9.6 kg
• C. 11.4 kg
• D. 10.5 kg

Answer: (C)

The concept being tested is the arithmetic mean, or average, of a set of numbers. To find the average weight per shipment, add all the weights and divide by how many shipments there are. Compute: 12 + 7 + 9 + 15 + 14 = 57. There are five shipments, so 57 ÷ 5 = 11.4. Therefore, the average weight per shipment is 11.4 kg. The other numbers don’t match the mean because they correspond to different calculations (for example, the middle value would be the median, not the average, and the sums that would yield 9.6 or 10.5 would require different totals).

The concept being tested is the arithmetic mean, or average, of a set of numbers. To find the average weight per shipment, add all the weights and divide by how many shipments there are.

Compute: 12 + 7 + 9 + 15 + 14 = 57. There are five shipments, so 57 ÷ 5 = 11.4. Therefore, the average weight per shipment is 11.4 kg.

The other numbers don’t match the mean because they correspond to different calculations (for example, the middle value would be the median, not the average, and the sums that would yield 9.6 or 10.5 would require different totals).