Question

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 8 tablet computers is shown in the table below.

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 HD	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
Motorola Droid XYboard	530	Android	10.1	9	TI OMAP
Samsung Ativ Smart PC	590	Windows	11.6	7	Intel
Samsung Galaxy Tab	525	Android	10.1	10	Nvidia
Sony Tablet S	360	Android	9.4	8	Nvidia

a. How many elements are in this data set?

b. How many variables are in this data set?

c. Which variables are categorical and which variables are quantitative?

Variable	Categorical/Quantitative
Cost ($)	SelectCategoricalQuantitativeItem 3
Operating System	SelectCategoricalQuantitativeItem 4
Display Size (inches)	SelectCategoricalQuantitativeItem 5
Battery Life (hours)	SelectCategoricalQuantitativeItem 6
CPU Manufacturer	SelectCategoricalQuantitativeItem 7

d. What type of measurement scale is used for each of the variables?

Variable	Measurement Scale
Cost ($)	SelectOrdinalRatioNominalItem 8
Operating System	SelectOrdinalRatioNominalItem 9
Display Size (inches)	SelectOrdinalRatioNominalItem 10
Battery Life (hours)	SelectOrdinalRatioNominalItem 11
CPU Manufacturer	SelectOrdinalRatioNominalItem 12

Answer 1

A)

there are total 8 elements . the count of the elements is determined by simply couting the total number of tablets in the data set

b. A variable is the value or characteristic which changes depending on the condition and the information. There is a total of five variables in the data set. Thus, the variable are as follows: 1. Cost (S) 2. Operating System 3. Display Size (inches) 4. Battery Life (hours) 5. CPU Manufacturer C. Categorical Variables: The categorical variables are generally the description of groups. Based on the meaning of categorical variables, out of the given five variables, the categorical variables are 1. Operating System 2. CPU Manufacturer Quantitative Variables: The quantitative variable are the numerical variables which are generally expressed in numbers, count or percentage. Based on the meaning of quantitative variables, out of the given five variables, the quantitative variables are 1. 2. 3. Cost (S) Display Size (Inches) Battery Life (hours) d. Note: The nominal scale: It is used to assign the items which are divided into categories without having a specific order The ratio scale: The ratio scale has the property of identity and magnitude. The type of scale is: Cost (S)-Ratio Scale Operating system Nominal Scale Display size (inches)-Ratio Scale Battery life (hours) Ratio Scale CPU Manufacture Nominal Scale