National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows:

Feb - 18

March - 21

April - 15

May - 23

June - 20

July - 26

August - 23

Forecast September sales volume using each of the following:

1) The Naive Approach

2) A five-month moving average (round 2 places)

3) A weighted average using 0.60 for August, 0.10 for July, and 0.30 for June. (Round 2 places)

4) Exponential smoothing with a smoothing constant equal to 0.15, assuming a March forecast of 16(000). (Round your intermediate forecast values and final answer to 2 decimal places.)

5) A linear trend equation. (Round your intermediate calculations and final answer to 2 decimal places.)