Question

In: Statistics and Probability

Item # 2 and 3       Author Lane   Chapter Ch 1   Page # 62    Question # 6...

Item # 2 and 3       Author Lane   Chapter Ch 1   Page # 62    Question # 6 and 7

6. Categorize the following variables as being qualitative or quantitative:

7. Specify the level of measurement used for the items in Question 6.

Answer:        Complete the chart

Variable

Classify

Qual or Quant

Level of Measurement

Nominal, Ordinal, Interval, Ratio

Age

Quant

Country you were born in

Qual

Favorite color

Qual

nominal

Time to respond to a question

Quant

Work:            Provide supporting comments for your answers

Age: Age can be measured

Country you were born in: There is no measurement for country of birth

Favorite color: No scale of measurement for color

Time to respond to a question: Time can be measured

Item # 4 thru 8 Author Illowsky   Chapter Ch 1   Page # 53 Question # 53, 54, 56, 58,

For the following exercises, identify the type of data that would be used to describe a response (quantitative discrete, quantitative continuous, or qualitative), and give an example of the data.

53. number of tickets sold to a concert

54. percent of body fat

56. time in line to buy groceries

58. most-watched television show

Answer:        Complete the chart

Variable

Classify

Qual or Quant

Classify

Discrete, Continuous, NA*

Number of tickets sold to a concert

Percent of body fat

Time in line to buy groceries

Most watched Television show

Age of executives in Fortune 500 companies

*          Na (not applicable)

Work:            Provide supporting comments for your answers

Number of tickets sold to a concert

Time in line to buy groceries

Most watched Television show

Item # 9 Author Illowsky   Chapter Ch 1   Page # 54 Question # 71

71. The instructor takes her sample by gathering data on five randomly selected students from each Lake Tahoe Community College math class. The type of sampling she used is

a. cluster sampling

b. stratified sampling

c. simple random sampling

d. convenience sampling

Answer:        The type of sampling used is:

Circle or highlight the correct answer

Cluster sampling

Stratified sampling

Simple random sampling

Convenience sampling

Work:            Provide supporting comments for your answers

Item # 10 Author Illowsky   Chapter Ch 1   Page # 54 Question # 73

73. Name the sampling method used in each of the following situations:

a. A woman in the airport is handing out questionnaires to travelers asking them to evaluate the airport’s service. She does not ask travelers who are hurrying through the airport with their hands full of luggage, but instead asks all travelers who are sitting near gates and not taking naps while they wait.

b. A teacher wants to know if her students are doing homework, so she randomly selects rows two and five and then calls on all students in row two and all students in row five to present the solutions to homework problems to the class.

c. The marketing manager for an electronics chain store wants information about the ages of its customers. Over the next two weeks, at each store location, 100 randomly selected customers are given questionnaires to fill out asking for information about age, as well as about other variables of interest.

d. The librarian at a public library wants to determine what proportion of the library users are children. The librarian has a tally sheet on which she marks whether books are checked out by an adult or a child. She records this data for every fourth patron who checks out books.

Name the sampling method by selecting the appropriate number:

1. Systematic,    2. Stratified,    3. Stratified Proportional,    4. Cluster,     5. Convenient,     6. Quota,   7. Simple Random)

Provide supporting comments for your answers

Provide supporting comments for your answers

Provide supporting comments for your answers

d.

__________________

Provide supporting comments for your answers

e.

__________________

Provide supporting comments for your answers

Solutions

Expert Solution

Variable

Classify

Qual or Quant

Level of Measurement

Nominal, Ordinal, Interval, Ratio

Age

Quant

Ratio

Country you were born in

Qual

Nominal

Favorite color

Qual

nominal

Time to respond to a question

Quant

Ratio

Variable

Classify

Qual or Quant

Classify

Discrete, Continuous, NA*

Number of tickets sold to a concert

Quant

Discrete

Percent of body fat

Quant

Continuous

Time in line to buy groceries

Quant

continuous

Most watched Television show

Qual

NA*

Age of executives in Fortune 500 companies

Quant

Continuous

Number of tickets sold to a concert : The variable takes only non negative integers as 0, 1, 2, ....

Time in line to buy groceries : Time can take any value in the certain interval.

Most watched Television show : Here we can classified  Television show  

71. The instructor takes her sample by gathering data on five randomly selected students from each Lake Tahoe Community College math class. The type of sampling she used is

a. cluster sampling

b. stratified sampling

c. simple random sampling

d. convenience sampling

Answer:        The type of sampling used is: Stratified

Work:    In stratified sampling we select random sample from each strata (or from each groups).

orchestra answered 2 years ago
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