How do you calculate SUS score?

How do you calculate SUS score?

How to calculate a SUS score

1. Add up the total score for all odd-numbered questions, then subtract 5 from the total to get (X).
2. Add up the total score for all even-numbered questions, then subtract that total from 25 to get (Y).
3. Add up the total score of the new values (X+Y) and multiply by 2.5. Example scoring:

What is a good SUS score?

a 68
What is a good SUS score? The average SUS score from all 500 studies is a 68. A SUS score above a 68 would be considered above average and anything below 68 is below average. The best way to interpret your score is to convert it to a percentile rank through a process called normalizing.

How many responses do you need for sus?

To obtain the SUS score, participants respond to 10 statements to gauge their perception of the usability of the system in question. By responding to each question with a 1-5 rating of how strongly they agree or disagree with the statements, an overall score can be calculated.

How do you normalize SUS scores?

To get this score, we take the normalized single question score and multiply it by 25. For example, if the average response to a single question is 2.5, we then multiply that average by 25 to get a SUS-equivalent score of 62.5.

What is SUS questionnaire?

System Usability Scale (SUS) is a questionnaire that is used to evaluate the usability of products and services. These survey questions are used as a quantitative method to evaluate and get actionable insights on the usability of a wide variety of new systems which may be either software or hardware.

How is Suprq score calculated?

Score Calculation To score your SUPR-Q results, simply average all of your scores, excluding the ‘likely to recommend’ item. For the NPS question, divide your score by 2 to convert it to the same Likert scale results as the rest of the survey.

What would a SUS score of 80 mean for your system?

Interpretation of the SUS rating Although the SUS score is a number from 1 to 100, the scale is not a percentage. So if your site has a SUS score of 80, it does not mean it is better than 80% of the websites. The reason is that the average of the SUS scale is not 50, but 68.

What does a high SUS score mean?

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). This is also the point where users are more likely to be recommending the product to a friend.

What does the System Usability Scale SUS measure?

System usability scale (SUS) is a quick and effective approach to evaluate the usability of a product. SUS is a low expense usability scale which can be employed for the assessment of interactive systems.

What SUS score means?

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 does the System Usability Scale sus measure?

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.

What is the system usability scale (SUS) score of this example?

The System Usability Scale (SUS) Score of this example is 77.5. We might not find the specific problem of your product or feature with this SUS Score, but this can be a base to see your product or feature’s usability. Your next question is probably what is the minimum SUS Score for a product or feature to be categorized as good?

How do you calculate the SUS score?

Calculate the SUS score To calculate a score between 0 and 100 for the product: Convert SUS responses to numbers, 1 for “Strongly Disagree”, and 5 for “Strongly Agree”. For odd-numbered questions, subtract 1 from the response. For even-numbered questions, subtract the response from 5. Add the scores from each question and multiply the total by 2.5.

What percentage is a 70 on the SUS test?

SUS Scores are not Percentages Even though a SUS score can range from 0 to 100, it isn’t a percentage. While it is technically correct that a SUS score of 70 out of 100 represents 70% of the possible maximum score, it suggests the score is at the 70th percentile. A score at this level would mean the application tested is above average.

What is a good Sus score for a website?

From some references I have read, the standard average of SUS score is 68. If your product or feature reaches less than that, you might have to go the extra mile to change or improve your product or feature usability.