Contents
What do SUS scores mean?
System Usability Scale
Abstract. The System Usability Scale (SUS) is an inexpensive, yet effective tool for assessing the usability of a product, including Web sites, cell phones, interactive voice response systems, TV applications, and more. It provides an easy-to-understand score from 0 (negative) to 100 (positive).
What is SUS standard?
The System Usability Scale (SUS) provides a “quick and dirty”, reliable tool for measuring the usability. It consists of a 10 item questionnaire with five response options for respondents; from Strongly agree to Strongly disagree.
How do you evaluate a SUS score?
How to calculate a SUS score
- Add up the total score for all odd-numbered questions, then subtract 5 from the total to get (X).
- Add up the total score for all even-numbered questions, then subtract that total from 25 to get (Y).
- Add up the total score of the new values (X+Y) and multiply by 2.5. Example scoring:
What does you look SUS mean?
suspicious or suspect
Sus is a shortening of suspicious or suspect. In slang, it has the sense of “questionable” or “shady.”
How do you present a sus score?
How do I display my SUS score?
Scoring SUS For odd items: subtract one from the user response. This scales all values from 0 to 4 (with four being the most positive response). Add up the converted responses for each user and multiply that total by 2.5. This converts the range of possible values from 0 to 100 instead of from 0 to 40.
How is SUS percentile calculated?
Is sus a real word?
Sus is a shortening of suspicious or suspect. In slang, it has the sense of “questionable” or “shady.”
How do you read a sus score?
How to Calculate Your Usability Score using SUS
- For each of the odd numbered questions, subtract 1 from the score.
- For each of the even numbered questions, subtract their value from 5.
- Take these new values which you have found, and add up the total score. Then multiply this by 2.5.
What should my Sus score be for usability?
A SUS score of 74 has higher perceived usability than 70% of all products tested. It can be interpreted as a grade of a B-. You’d need to score above an 80.3 to get an A (the top 10% of scores).
What’s the average score on the SUS scale?
The average SUS score is 68. This simply means that a score of 68 will just put you at 50th percentile. Below is the general guideline on the interpretation of SUS score:
Which is the best way to interpret the results of the SUS?
The best way to interpret your results involves “normalizing” the scores to produce a percentile ranking SUS is not diagnostic – its use is in classifying the ease of use of the site, application or environment being tested
What’s the average score on the system usability scale?
Interpreting System Usability Scale (SUS) Score SUS score will be able to tell you your usability performance in the aspects of effectiveness, efficiency, and overall ease of use. Although each responses yield a score on a scale of 0 – 100, do not mistake it as a percentage or percentile. The average SUS score is 68.