Understand the idea
Weights encode priorities; they are not objective truth. Use the same 1–5 scale: higher is better for both access and affordability. Test how a changed weight affects the choice.
WORKED EXAMPLE
Option A scores 4 for access and 2 for affordability; weights are 60% and 40%. Weighted score = 4 × 0.6 + 2 × 0.4 = 3.2.
Watch it step by step
Step 1 of 4Read
Read the labels and values: Access: 4, Affordability: 2.
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Read or choose any step
- Read
Read the labels and values: Access: 4, Affordability: 2.
- Represent
Compare the bars on a scale that starts at zero.
- Calculate
Work through the calculation in the example; result: 3.2.
- Interpret
Explain what the result means and what it does not establish.
TRY BEFORE CHECKING
Exercises with feedback
MAKE SOMETHING YOU CAN EXPLAIN
Your practical challenge
Compare A (4,2) and B (3,4) at weights 60/40. Repeat with 80/20 and explain why the preferred option can change.
These ticks are your self-review. They do not automatically assess project quality. Ask an adult or partner to review what you can show.
Use the skill in a new situation
State whose priorities the weights represent.