Acer Iconia W$510599$ Windows $25\mathrm{.}78\mathrm{.}5$ Intel

Amazon Kindle Fire HD $299$ Android $22\mathrm{.}69$ TI OMAP

Apple iPad $4499$ iOS $24\mathrm{.}611$ Apple

HP Envy X$2860$ Windows $29\mathrm{.}58$ Intel

Lenovo ThinkPad Tablet $668$ Windows $25\mathrm{.}710\mathrm{.}5$ Intel

Microsoft Surface Pro $899$ Windows $26\mathrm{.}94$ Intel

Motorola Droid XYboard $530$ Android $25\mathrm{.}79$ TI OMAP

Samsung Ativ Smart PC $590$ Windows $29\mathrm{.}57$ Intel

Samsung Galaxy Tab $525$ Android $25\mathrm{.}710$ Nvidia

Sony Tablet S $360$ Android $23\mathrm{.}98$ Nvidia

$($a$)$

What is the average cost for the tablets?

$

$($b$)$

Compare the average cost of tablets with a Windows operating system to the average cost of tablets with an Android operating system.

The average cost of a tablet with a Windows operating system is $

$.$ The average cost of a tablet with an Android operating system is $

$.$ Thus we see tablets with Windows operating systems cost

$---$Select$---$

tablets with an Android operating system, on average.

$($c$)$

What percentage of tablets use a CPU manufactured by Nvidia?

$\%$

$($d$)$

What percentage of tablets use an Windows operating system?

$\%$