β = - (1 / ρ)(∂ρ/∂T)ρ const
where
ρ density T Temperature
β measures the fractional decrease in fluid density as temperature increases at constant pressure.
... 11.1% have a female householder with no husband present, and 25.2% are non-families. 18.8% of all households are made up of individuals and 2.3% have someone living ...