Question

In: Statistics and Probability

A search for “car” on a shopping website gave a list of the following items: Item...

A search for “car” on a shopping website gave a list of the following items:

Item	Department	Unit Price	Average Reviews
Hot Wheels 9-Car Gift Pack (Styles May Vary)	Toy	$9	5
Graco Nautilus 3-in-1 Car Seat, Matrix	Baby	$140	4
...	...	...	...

You can use the following example problem as a model.

What are the “individuals” for this data set?

1-Kids

2-Customers

3-Items for sale on this website

4-Shopping website

Which of the following statements is NOT correct?

1-“Department” is a categorical variable

2-“Department” can be visualized using a bar plot

3-“Price” is a numerical variable

4-“Price” can be visualized using a pie chart

Expert Solution

The "individuals" for the data set are:

3-Items for sale on this website

The statement that is NOT correct is:

4- Price can be visualised using a pie chart.

VERIFICATION:

For the first problem,

Items for sale are the individuals. Because an individual is that which exists as a distinct entity. Individuals are the objects described by a set of data. Population is all individuals of interest. Sample is a subset of the population. So cars or the items for sale are the individuals here.

For the second problem,

1. Department is a categorical variable which is true because toy ,baby etc are classifiers.

2. Department can be visualised as a bar plot as it's a categorical data and have frequency for each category.

3. Price is a numerical variable. True because it takes values within intervals.

4. Price can NOT be visualised using pie chart because it's not categorical. It don't have frequencies at each category.

orchestra answered 2 years ago

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