season appearance interchange tries goals f/g points
season
appearance
interchange
tries
goals
f\\/g
points
first second first_number
number
number
number
number
number
number
number(text) number number number number number number
2000(bulldogs) 21 1 13 1 1 0
what is the average of all 14 interchanges ?
WP VBD-AUX DT NN IN DT CD NNS .
1.75
select avg ( c3_number ) from w