* Geographic location: Weather plays a huge role. Kids in sunny climates will likely go outside more often than those in consistently rainy or cold areas.
* Time of year: Outdoor play is much more common in warmer months.
* Cultural factors: Some cultures encourage more outdoor play than others.
* Socioeconomic factors: Access to safe outdoor spaces, parental supervision, and other factors influence how much time kids spend outdoors.
* Age of children: Younger children may go outside less frequently than older children who are more independent.
In short, any number given would be purely speculative.