rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 venezuela 9 8 6 23
what was the average number of gold medals received by a nation ?
WP VBD-AUX DT JJ NN IN NN NNS VBN IN DT NN .
3.66
select avg ( c3_number ) from w