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Evaluation Matrix

An important tool you can use tomake informed decisions

Decisions Can Be Difficult

When making a choice among severaloptions, it helps to know at the outset whatis of greater or lesser importance to you
Most of us cannot “have it all”
The “yardsticks” you will use to measure howeach option rates on different factors can becalled criteria (singular is “criterion”)

Car Purchase

Some factors (criteria) that may beimportant:

–Gas mileage
–Seating capacity
–Cost
–Warranty
–Cost of maintenance
–Cargo capacity

College Transfer Choices

Cost
Programs Offered
Transferable Credits
Housing
Legacy
Campus Activities

Device

Speed
Memory
Features
Cost
Brand reputation
Operating system
Style
Warranty

Your Thing

Some factors (criteria) that may beimportant:

Determine your criteria and construct amatrix in Excel. Each criteria will be given aweight to reflect its relative importance

Evaluation Matrix for Purchasing a Device
Criteria	Weight	System 1	System 2	System 3
Rating	Weighted score	Rating	Weighted score	Rating	Weighted score
processor speed
memory capacity
multimedia capability
vendor support
initial cost
Totals

Memory capacity is our most important criteria soreceives the highest weight. Cost, while still aconcern, is not as critical as other factors.

Evaluation Matrix for Purchasing a Device
Criteria	Weight	System 1	System 2	System 3
Weighted	Weighted	Weighted
Rating	Score	Rating	Score	Rating	Score
processor speed	25%
memory capacity	30%
multimedia capability	15%
vendor support	20%
initial cost	10%
Totals	100%

Rank the 3 systems on how well they meet criteria.System 1 did well on speed and cost, but poor onmemory (important to us!). System 2 was good onmemory but poor on vendor support.

Evaluation Matrix for Purchasing a Computer
Criteria	Weight	System 1	System 2	System 3
Weighted	Weighted	Weighted
Rating	Score	Rating	Score	Rating	Score
processor speed	25%	90	75	75
memory capacity	30%	60	90	80
multimedia capability	15%	75	75	60
vendor support	20%	75	60	75
initial cost	10%	85	75	80
Totals	100%

Evaluation Matrix for Purchasing a Computer
Criteria	Weight	System 1	System 2	System 3
Weighted	Weighted	Weighted
Rating	Score	Rating	Score	Rating	Score
processor speed	25%	90	75	75
memory capacity	30%	60	90	80
multimedia capability	15%	75	75	60
vendor support	20%	75	60	75
initial cost	10%	85	75	80
Totals	100%	385	375	370

At this point you could total the ratings to get araw score. This shows that System 1 scored thebest.

You should compute a weighted score bymultiplying the weight you assigned times therating you gave for a criteria.

Evaluation Matrix for Purchasing a Computer
Criteria	Weight	System 1	System 2	System 3
Weighted	Weighted	Weighted
Rating	Score	Rating	Score	Rating	Score
processor speed	25%	90	22.50%	75	18.75%	75	18.75%
memory capacity	30%	60	18.00%	90	27.00%	80	24.00%
multimedia capability	15%	75	11.25%	75	11.25%	60	9.00%
vendor support	20%	75	15.00%	60	12.00%	75	15.00%
initial cost	10%	85	8.50%	75	7.50%	80	8.00%
Totals	100%	385	375	370

Sum up the weighted scores and a winner willemerge. System 2 appears to meet more of thecriteria that we weighted as important to us.

Evaluation Matrix for Purchasing a Computer
Criteria	Weight	System 1	System 2	System 3
Weighted	Weighted	Weighted
Rating	Score	Rating	Score	Rating	Score
processor speed	25%	90	22.50%	75	18.75%	75	18.75%
memory capacity	30%	60	18.00%	90	27.00%	80	24.00%
multimedia capability	15%	75	11.25%	75	11.25%	60	9.00%
vendor support	20%	75	15.00%	60	12.00%	75	15.00%
initial cost	10%	85	8.50%	75	7.50%	80	8.00%
Totals	100%	385	72.25%	375	76.5%	370	74.75%

The summed up weighted scoregive a better result because itshows the one that rated thehighest on things that wereimportant to us!