Table PC Comparison provides a wide variety of information about tablet computers. Their 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 10 tablet computers is shown in Table 1.6(Table PC Comparison website, Feb 25, 2013). Tablet Cost ($) Operating Display Battery CPU System Size(inches) Life(hours) Manufacturer Acer 599 Windows 10.1 8.5 Intel Amazon 299 Android 8.9 9 TI OMAP Apple 499 ios 9.7 11 Apple HP 860 Windows 1 1.6 8 Intel Lenovo 668 Windows 10.1 10.5 Intel Microsoft 899 Windows 10.6 4 Intel Motorola 530 Android 10.1 9 TIOMAP Samsung Ativ 590 Windows 11.6 7 Intel Samsung 525 Android 10.1 10 Nvidia Galaxy Sony 360 Android 9.4 8 Nvidia a. How many elements are in the data set? b. How many variables are in the data set? c. Which variables are categorical and which variables are quantitative? d. What type of measurement scale is used for each of the variables