How are survey ratings and satisfaction levels calculated ?

How are survey ratings and satisfaction levels calculated ?

I have an 11 question survey. 5 choices (1-strongly disagree, 2-disagree, 3-agree, 4-strongly agree, not observed).

First survey I answered all questions with 1-strongly disagree. It showed a satisfaction level of 20/100 with a rating of 11.0

Second survey I answered all questions with 3-agree. It showed a satisfaction level of 60/100 with a rating of 33.0

How is the math calculated ???

Ver: 7.5.0
Build: 7505








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