Verfügbarkeit: A practical guide to the system usability scale

A practical guide to the system usability scale: background, benchmarks & best practices

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Bibliographische Detailangaben
1. Verfasser:	Sauro, Jeff (VerfasserIn)
Format:	Buch
Sprache:	English
Veröffentlicht:	Denver, Col. Measuring Usability LLC 2011
Schlagworte:	Benutzerfreundlichkeit Datenanalyse
Online-Zugang:	Inhaltsverzeichnis
Beschreibung:	Literaturverz. S. 156 - 158
Beschreibung:	162 S. graph. Darst.
ISBN:	9781461062707

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Datensatz im Suchindex

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adam_text	Contents Contents Acknowledgements............................................................................................... 8 Highlights.............................................................................................................10 The System Usability Scale................................................................................... 11 Background ..........................................................................................................12 SUS History & Development ................................................................................ 14 Where did SUS come from? ..............................................................................15 How was SUS developed? .................................................................................16 Scoring & Reporting SUS Scores ...........................................................................18 Scoring the SUS ................................................................................................. 19 Error Checks in the SUS Calculator .................................................................21 An Example Scored SUS Questionnaire .............................................................22 Should you report the mean or the median SUS Score? ...................................22 What are possible SUS scores? .........................................................................25 Handling missing values ....................................................................................26 Interpreting SUS Scores .......................................................................................30 Interpreting a SUS Score ...................................................................................31 SUS Grading on a Curve .................................................................................33 Is a SUS score a percentage? .............................................................................36 What is a good SUS score? ......................................................................■.........36 Can you report statistics on the individual items in the SUS? ...........................37 Measuring changes in SUS overtime ................................................................39 Properties and SUS Characteristics ......................................................................41 Why are the items alternating between positive and negative wording? .........42 Problems caused by alternating SUS items from positive to negative ...............43 Can SUS be used on websites? ..........................................................................45 Does SUS need to be administered during a usability test? ...............................48 Does SUS provide an absolute measure of usability? ........................................49 SUS Benchmark Data ...........................................................................................52 SUS benchmarks by interface type ....................................................................53 Summary Table of SUS Scores by Type of Interface .......................................54 Definitions of benchmark sources ..................................................................54 Source ТаЫе ..................................................................................................55 iauro Contents Converting raw SUS score to percentile ranks ..................................................56 Modifying the SUS ................................................................................................60 Changing the wording of SUS items ..................................................................61 Using an ail-positively worded version of SUS ....................................................62 Adding items to SUS ..........................................................................................63 Removing items from SUS .................................................................................63 Changing the order of SUS Items ......................................................................64 Changing the number of response options .......................................................64 Can I remove the neutral response? .................................................................67 SUS Reliability, Validity & Effectiveness ...............................................................68 Does SUS have enough points of discrimination? .............................................69 Are 10 items enough to measure usability? ......................................................70 How reliable is SUS? .........................................................................................71 How valid is SUS? ..............................................................................................72 What other questionnaires are like SUS? ..........................................................72 How SUS compares to other questionnaires .....................................................75 SUS & SUMI................................................................................................... 75 SUS and WAMMI...........................................................................................78 Do SUS scores correlate with other usability metrics? ......................................79 SUS and customer loyalty .................................................................................81 Is SUS data normally distributed? ....................,...........,....................................83 Detecting non-normality ................................................................................84 The central limit theorem .....................................___,,...................................87 Robustness ....................................................................................................89 Statements about the population, ......................................................................89 Normality summary .........................................................................................90 SUS is free: Do you get what you pay for? ..................,......................................90 Does SUS measure usability? ............................................................................92 What else does SUS measure? ..........................................................................92 Is SUS reliable in different languages? ..............................................................94 What factors affect the SUS scores? .................................................................95 Experience .....................................................................................................95 Age ................................................................................................................98 Gender ...........................................................................................................99 M-T^iji iPrU^tö liïv CO ^ itti yi Ul - i Contents Education .......................................................................................................99 Accounting for levels of experience when comparing products with SUS .........99 Is SUS the best questionnaire to measure usability? .......................................101 Common mistakes when using the SUS ..........................................................102 Statistical Comparisons of SUS Scores ................................................................104 Confidence intervals around a SUS score ........................................................ 105 Comparing a SUS score to a benchmark .........................................................107 Assumptions ................................................................................................ 110 How do I generate a percentile score relative to a benchmark? ..................... Ill Determining whether SUS scores are significantly different ...........................115 Within-subjects comparison (paired t-test) .................................................115 Confidence interval around the difference ..................................................118 Between-subjects comparison (2-sample West) .......................................... 122 Why you don t need to worry (too much) about violating assumptions ......128 Sample Size ........................................................................................................130 What is the minimum sample size needed? ....................................................131 Is a SUS score from a Small Sample Size Useless? ...........................................134 Standard deviation of the SUS ........................................................................137 Calculating sample sizes for single SUS tests ...................................................138 Calculating sample sizes for comparing SUS scores .........................................142 Between-subjects ........................................................................................143 Within-subjects ............................,........................,...........,.....,.,.,................147 Calculating sample sizes for comparing a SUS score to a benchmark ..............151 One-sided confidence levels ..........................................................................153 Description of Data Sources ................................................................................155 References ...........................................................................................................156 The System Usability Scale .................................................................................159 All Positive Version of the System Usability Scale .............................................. 160 About the Author ...............................................................................................161 Jeff Sauro
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spelling	Sauro, Jeff Verfasser (DE-588)1022650173 aut A practical guide to the system usability scale background, benchmarks & best practices Jeff Sauro Denver, Col. Measuring Usability LLC 2011 162 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Literaturverz. S. 156 - 158 Benutzerfreundlichkeit (DE-588)4005541-3 gnd rswk-swf Datenanalyse (DE-588)4123037-1 gnd rswk-swf Benutzerfreundlichkeit (DE-588)4005541-3 s Datenanalyse (DE-588)4123037-1 s DE-604 Digitalisierung UB Regensburg - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027013425&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis
spellingShingle	Sauro, Jeff A practical guide to the system usability scale background, benchmarks & best practices Benutzerfreundlichkeit (DE-588)4005541-3 gnd Datenanalyse (DE-588)4123037-1 gnd
subject_GND	(DE-588)4005541-3 (DE-588)4123037-1
title	A practical guide to the system usability scale background, benchmarks & best practices
title_auth	A practical guide to the system usability scale background, benchmarks & best practices
title_exact_search	A practical guide to the system usability scale background, benchmarks & best practices
title_full	A practical guide to the system usability scale background, benchmarks & best practices Jeff Sauro
title_fullStr	A practical guide to the system usability scale background, benchmarks & best practices Jeff Sauro
title_full_unstemmed	A practical guide to the system usability scale background, benchmarks & best practices Jeff Sauro
title_short	A practical guide to the system usability scale
title_sort	a practical guide to the system usability scale background benchmarks best practices
title_sub	background, benchmarks & best practices
topic	Benutzerfreundlichkeit (DE-588)4005541-3 gnd Datenanalyse (DE-588)4123037-1 gnd
topic_facet	Benutzerfreundlichkeit Datenanalyse
url	http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027013425&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
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