I like to search the new reviews in my area once in a while.

...so if only one is showing that seems odd. Maybe admin can shed some light on this. Also, an example would help us figure this out.

But I've seen the averages, without stars, on profiles with only one or two reviews. I usually see the NA while scrolling through the new reviews, and sometimes I'll notice the NA has changed to the calculated average later in the same day. So, I always wondered if it was a matter of a new review being fully processed into the system. Total guess. I wouldn't worry about it too much. Here is an example.

Though reviews go up when they're approved things aren't final until the next site update.

I was trying to find examples and after one day all the first review showed their ratings.  Thanks.