Supply Chain Management 3/12 - Procurement Side, in Depth

Which statements regarding the methods for Lot Size Calculation are true?

A car dealer has sold in each of the last six years the following number of cars (from year 1 to year 6):
3000, 7000, 14000, 8000, 3000, 2000

Determine, with help of the moving average method, which sales are to be expected for the upcoming seventh year if the sales from the last four years are considered.

An online platform has sold the following number of shampoos during the past seven years: 

1: 63 / 2: 76 / 3: 82 / 4: 97 / 5: 77 / 6: 88 / 7: 91

Determine, with the help of moving average method, which sales can be expected for the upcoming eighth year,
if the last five years are considered.

During the past four years, an aircraft manufacture has sold the following number of aircraft: 50, 25, 12, 13

Determine, with the help of the method of the moving average, which sales volume can be expected for the upcoming fifth year (under consideration of the last four years).

Determine the optimal order quantity using the Harris-Andler Formula.

Annual demand: 500 pieces
Transaction cost per order: CHF 50
Annual storage cost in % of the at purchase price valued inventory: 15%
Purchase price per piece: CHF 70
Minimum inventory: 0 pieces

Does the following statement correspond to the term "Method with Cost Optimization" or "Method without Cost Optimization"?

"Silver-Meal method"

Does the following statement correspond to the term "Method with Cost Optimization" or "Method without Cost Optimization"?

"Refill to the highest level"

Does the following statement correspond to the term "Method with Cost Optimization" or "Method without Cost Optimization"?

"Fixed lot size"