The monthly utility bills for a household in Riverside, California, were recorded for $12$ consecutive months starting in January $2017.$

$\backslash$table$[[$Month$,$Amount $($$$),$Month,Amount $($$$)],[$January$,243\mathrm{.}91,$July,$459\mathrm{.}27],[$February$,233\mathrm{.}95,$August,$408\mathrm{.}54],[$March$,255\mathrm{.}47,$September,$446\mathrm{.}37],[$April$,247\mathrm{.}25,$October,$$286\mathrm{.}40$