Reviews and Histogram

[gabrielfiorelli]

Hello everyone.

First of all, sorry for my bad english, not my main language.

Just seeking for help to understand some results that this awesome lib can provide to us. :)

In the image below we can look at the "reviews" field.
The first line for each game is from country = br, the second is from country=us.

There's 2249 reviews from BR.
There's 9189 reviews from US.
From a total of 160.350 reviews.

1 - I image that's ok to 1,4% of the reviews comes from Brazil and 5,7 comes from United States. Does it sounds right?
2 - Why the histogram changes A LOT when we are looking for different countries? Does anyone have a clue?