Tablet PC Comparison provides a wide variety of information about tablet computers. The company's website enables consumers to easily compare different tablets using factors such as cost$,$ type of operating system, display size, battery life, and CPU manufacturer. A sample of $4$ tablet computers is shown below $($Tablet PC Comparison website, February $28,2013).$

$\backslash$table$[[$Tablet$,$Display Battery$],[,$Operating,Size,Life,CPU$],[Cost($$$),$System,$($Inches$),($Hours$),$Manufacturer$],[$Amazon Kindle Fire HD$,299,$Android,$8\mathrm{.}9,9,$TIOMAP$],[$Apple iPad $4,499,$IOS,$9\mathrm{.}7,11,$Apple$],[$Microsoft Surface Pro,$899,$Windows,$10\mathrm{.}6,4,$Intel$],[$amsung Galaxy Tab,$525,$Android,$10\mathrm{.}1,10,a$