dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness
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dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness [2021/03/25 10:39] murphy |
dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness [2021/08/18 10:52] (current) murphy |
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| ===== About ===== | ===== About ===== | ||
| - | [[dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness | Return to Top]] | ||
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| There are two ways to calculate effectiveness: | There are two ways to calculate effectiveness: | ||
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| **Mathematically:** | **Mathematically:** | ||
| - | <m>Effectiveness = {sum{user=1}{numberOfTesters}{Completed Tasks by user} / sum{user=1}{numberOfTesters} {Total Tasks assigned to user}} * 100%</m> | + | <color white>o</color> <m>Effectiveness = {sum{user=1}{numberOfTesters}{Completed Tasks by user} / sum{user=1}{numberOfTesters} {Total Tasks assigned to user}} * 100%</m> \\ |
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| Here is an example where the system uses 10 tasks and all the tasks are completed by 5 users. The results are: | Here is an example where the system uses 10 tasks and all the tasks are completed by 5 users. The results are: | ||
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| [[dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness| Return to Top]] | [[dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness| Return to Top]] | ||
| - | Another way to understand an application or system efficiency from a usability perspective is to count the errors instead of counting the success of completing tasks. Every error can have more consequences requiring more work to "undo" thus negatively impacting Effectiveness and efficiency. | + | Another way to understand an [[dido:public:ra:xapend:xapend.a_glossary:a:application|application]] or system efficiency from a [[dido:public:ra:xapend:xapend.a_glossary:u:usability|usability]] perspective is to count the errors instead of counting the success of completing tasks. Every error can have more consequences requiring more work to "undo" thus negatively impacting Effectiveness and efficiency. |
| The following is a partial list that users can make while completing tasks(( | The following is a partial list that users can make while completing tasks(( | ||
| Jeff Sauro, __10 Essential Usability Metrics__, Measuring U, 30 November 2011, Accessed 19 November 2020, | Jeff Sauro, __10 Essential Usability Metrics__, Measuring U, 30 November 2011, Accessed 19 November 2020, | ||
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| [[dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness | Return to Top]] | [[dido:public:ra:1.4_req:2_nonfunc:30_usability:effectiveness | Return to Top]] | ||
| - | <color #FF0000><todo>TBD</todo></color> | + | : <wrap hi><color red> To be added/expanded in future revisions of the DIDO RA </color></wrap> |
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dido/public/ra/1.4_req/2_nonfunc/30_usability/effectiveness.1616683175.txt.gz · Last modified: 2021/03/25 10:39 by murphy
