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Weighted Scoring Model (2-level: Factors and Criteria ). A 1-level model is explained in Schwalbe, K. (2005), Information Technology Project Management. If used for usability analysis this is also called a Weighted Usability Factors (WUF) model. Example: Evaluating the best VCR.

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weighted scoring model 2 level factors and criteria
Weighted Scoring Model(2-level: Factors and Criteria )

A 1-level model is explained in Schwalbe, K. (2005), Information Technology Project Management.

If used for usability analysis this is also called a Weighted Usability Factors (WUF) model.

example evaluating the best vcr
Example:Evaluating the best VCR

The 2-level WSM method

1 select the main factors and criteria

1. Select the main factors and criteria

FACTORS

1. Simplicity of Controls

Play

Fast Forward

Rewind

Counter

Timer

2. Flexibility of Recording Options

“Instant” Recording

Daily Recording

Weekly Recording

User Defined Recording

Preset Recordings

3. Styling

Colour

Size

CRITERIA

2 rate the importance of each factor on a scale of 10
2. Rate the importance of each factor on a scale of 10
  • 1. Simplicity of Controls
    • Play
    • Fast Forward
    • Rewind
    • Counter
    • Timer
  • 2. Flexibility of Recording Options
    • “Instant” Recording
    • Daily Recording
    • Weekly Recording
    • User Defined Recording
    • Preset Recordings
  • 3. Styling
    • Colour
    • Size

(7 out of 10)

(9 out of 10)

(5 out of 10)

3 rate the importance of each criterion on a scale of 10
3. Rate the importance of each criterion on a scale of 10
  • 1. Simplicity of Controls
    • Play
    • Fast Forward
    • Rewind
    • Counter
    • Timer
  • 2. Flexibility of Recording Options
    • “Instant” Recording
    • Daily Recording
    • Weekly Recording
    • User Defined Recording
    • Preset Recordings
  • 3. Styling
    • Colour
    • Size

(7)

5 out of 10

6

6

9

8

(9)

9 out of 10

5

6

9

6

(5)

5 out of 10

5

4 rate the extent to which each criterion is met out of 10

1. Simplicity of Controls

    • Play
    • Fast Forward
    • Rewind
    • Counter
    • Timer
  • 2. Flexibility of Recording Options
    • “Instant” Recording
    • Daily Recording
    • Weekly Recording
    • User Defined Recording
    • Preset Recordings
  • 3. Styling
    • Colour
    • Size

(7)

5

6

6

9

8

(9)

9

5

6

9

6

(5)

5

5

4. Rate the extent to which each criterion is met (out of 10)

8 out of 10

6 out of 10

6 out of 10

9 out of 10

4 out of 10

10 out of 10

8 out of 10

6 out of 10

8 out of 10

1 out of 10

8 out of 10

8 out of 10

5 calculate the weighted score for each criterion

1. Simplicity of Controls

    • Play
    • Fast Forward
    • Rewind
    • Counter
    • Timer
  • 2. Flexibility of Recording Options
    • “Instant” Recording
    • Daily Recording
    • Weekly Recording
    • User Defined Recording
    • Preset Recordings
  • 3. Styling
    • Colour
    • Size

(7)

5 times

6 times

6 times

9 times

8 times

(9)

9 times

5 times

6 times

9 times

6 times

(5)

5 times

5 times

5. Calculate the weighted score for each criterion

8 = 40

6 = 36

6 = 36

9 = 81

4 = 32

10 = 90

8 = 40

6 = 36

8 = 72

1 = 6

8 = 40

8 = 40

6 total the scores

1. Simplicity of Controls

    • Play
    • Fast Forward
    • Rewind
    • Counter
    • Timer
  • 2. Flexibility of Recording Options
    • “Instant” Recording
    • Daily Recording
    • Weekly Recording
    • User Defined Recording
    • Preset Recordings
  • 3. Styling
    • Colour
    • Size

(7)

5 times

8 = 40

6 times

6 = 36

6 times

6 = 36

9 times

9 = 81

8 times

4 = 32

(9)

9 times

10 = 90

5 times

8 = 40

6 times

6 = 36

9 times

8 = 72

6 times

1 = 6

(5)

5 times

8 = 40

5 times

8 = 40

6. Total the scores

} 225

} 244

} 80

7 divide by the maximum possible score and convert to a percentage

1. Simplicity of Controls

    • Play
    • Fast Forward
    • Rewind
    • Counter
    • Timer
  • 2. Flexibility of Recording Options
    • “Instant” Recording
    • Daily Recording
    • Weekly Recording
    • User Defined Recording
    • Preset Recordings
  • 3. Styling
    • Colour
    • Size

(7)

5 times

8 = 40

6 times

6 = 36

6 times

6 = 36

9 times

9 = 81

8 times

4 = 32

(9)

9 times

10 = 90

5 times

8 = 40

6 times

6 = 36

9 times

8 = 72

6 times

1 = 6

(5)

5 times

8 = 40

5 times

8 = 40

7. Divide by the maximum possible score, and convert to a percentage

} 225/340*100 = 66%

} 244/350*100 = 70%

} 80/100*100 = 80%

8 work out an overall weighted score

7*66 + 9*70 + 5*80

1492

=

=

71%

7*100 + 9*100 + 5*100

2100

8. Work out an overall weighted score

Total weighted score

Maximum possible weighted score

=