Operating system Display

1. The following data set comes from Tablet PC Comparison in 2013, which is a website that helps consumers easily compare tablet computers.

Tablet Cost ($) Operating system Display size (inches) Battery life (hours) CPU manufacturer
Acer Iconia W510 599 Windows 10.1 8.5 Intel
Amazon Kindle Fire 299 Android 8.9 9 TI OMAP
Apple iPad 4 499 iOS 9.7 11 Apple
HP Envy X2 860 Windows 11.6 8 Intel
Lenovo ThinkPad 668 Windows 10.1 10.5 Intel
Microsoft Surface Pro 899 Windows 10.6 4 Intel
Motorola Droid XY 530 Android 10.1 9 TI OMAP
Samsung Ativ Smart 590 Windows 11.6 7 Intel
Samsung Galaxy Tab 525 Android 10.1 10 Nvidia
Sony Tablet S 360 Android 9.4 8 Nvidia

How many variables are in this data set?
How many observations are in this data set?
What type of data set is this (cross-sectional, time series, or panel)?
What is the sample size?
Which variables are categorical?
What is the average cost of tablets?
Which operating system type has the lowest average cost?
What percentage of tables have a CPU manufactured by TI OMAP?

2. The following data set comes from Consumer Reports in 2012 and is about cordless landline telephones. Consumer Reports rated each model on an increasing scale from 1 to 100. That’s what the variable Score is.

Brand Model Price ($) Score Voice quality Handset on base? Talk time (hours)
AT&T CL84100 60 73 Excellent Yes 7
AT&T TL92271 80 70 Very good No 7
Panasonic 4773B 100 78 Very good Yes 13
Panasonic 6592T 70 72 Very good No 13
Uniden D2997 45 70 Very good No 10
Uniden D1788 80 73 Very good Yes 7
Vtech DS6521 60 72 Excellent No 7
Vtech CS6649 50 72 Very good Yes 7

How many variables are in this data set?
How many observations are in this data set?
What type of data set is this (cross-sectional, time series, or panel)?
What is the sample size?
Which variables are categorical?
What percentage of phones have a handset on its base?
What percentage of phones have excellent voice quality?
What is the average price of phones?
Based on average Scores, which Brand appears to be the best?

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