Weighted Average


Concept Check

Weighted Average assigns the same cost to all units
True

Weighted Average reflects only the most recent prices
False

Weighted Average smooths price fluctuations
True

Weighted Average is allowed under IFRS
True


Fill in the Blanks

1. Average cost per unit = Total cost ÷ Total units

2. Weighted Average results in lower profit volatility

3. Weighted Average COGS usually falls between FIFO and LIFO


Calculation Practice

Inventory purchases
40 units @ $5
60 units @ $7

Units sold
50

Tasks
Calculate average cost per unit
Calculate COGS
Calculate Ending Inventory

Step 1 Total Units & Total Cost
Total units = 40 + 60 = 100 units
Total cost = $200 + $420 = $620

Step 2 Average Cost per Unit
620 ÷ 100 = $6.20

Step 3 Calculate COGS
Units sold = 50
50 × $6.20 = $310
COGS = $310

Step 4 Calculate Ending Inventory
Units remaining = 50
50 × $6.20 = $310
Ending Inventory = $310


Method Selection | Sample Answers

Choose the best method and explain why

A chemical company producing identical products
Weighted Average - products are identical and costs fluctuate.

A grocery store selling perishable goods
FIFO - ensures older items are sold first.

A company wanting stable profits
Weighted Average - reduces extreme profit swings.


Mini Case Study

A manufacturing company sells identical products and experiences frequent price changes in raw materials. Management wants a method that avoids extreme profit swings.

Questions

Which inventory valuation method is most suitable?
Weighted Average

Why is this method appropriate?
It averages costs and avoids sharp profit fluctuations caused by changing prices.

How does this method affect COGS and profit stability?
COGS and profits remain moderate and more consistent over time.


Quick Quiz

How is the average cost per unit calculated?
Total inventory cost ÷ total units available

Does Weighted Average use oldest or newest costs only?
Neither - it uses an average of all costs

How does Weighted Average profit compare to FIFO and LIFO?
It falls between FIFO and LIFO

Is Weighted Average allowed under IFRS?
Yes

Name one business that commonly uses Weighted Average.
Manufacturing company | Chemical company | Oil company

Retail Inventory Method ➧ Here