In [2]:
import pandas
import matplotlib
In [3]:
import pandas as pd 
    
# making dataframe 
df = pd.read_csv("beer_reviews.csv")
In [6]:
df.hist(column='review_overall')
Out[6]:
array([[<AxesSubplot:title={'center':'review_overall'}>]], dtype=object)
In [13]:
df.hist(column='review_aroma')
Out[13]:
array([[<AxesSubplot:title={'center':'review_aroma'}>]], dtype=object)
In [22]:
print(df.groupby('review_overall')['review_aroma'].nunique())   

review_overall
0.0    3
1.0    9
1.5    9
2.0    9
2.5    9
3.0    9
3.5    9
4.0    9
4.5    9
5.0    9
Name: review_aroma, dtype: int64