Google+ Local scores
All scores in Google+ Local are determined by user reviews.
Individual user ratings are based on a 0 to 3 point scale.
We take these ratings, average them, and then multiply by ten to arrive at averaged scores.
When you’re searching for locations in Google+ Local, you may see these scores depicted in two ways:
Scores with multiple aspects
These scores will show you several scores for different aspects of the business. For example, restaurants are scored across three areas--food, decor, and service--with food being the primary aspect.
Overall scores
When we don’t have enough user ratings on different aspects, we will just show an overall score. An overall score is comparable to a score in the primary aspect for a location, like food for restaurants.
Resources https://support.google.com/local/bin/answer.py?hl=en&answer=1723748&p=zagat_score
Individual user ratings are based on a 0 to 3 point scale.
| 3 | Excellent |
| 2 | Very Good |
| 1 | Good |
| 0 | Poor to Fair |
| 26-30 | Extraordinary to perfection |
| 21-25 | Very good to excellent |
| 16-20 | Good to very good |
| 11-15 | Fair to good |
| 0-10 | Poor to fair |
Scores with multiple aspects
Overall scores
Resources https://support.google.com/local/bin/answer.py?hl=en&answer=1723748&p=zagat_score
