Finite Population Sampling: Preferred Methods Quiz and Flashcards

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Questions and Answers

What is the preferred sampling method for a population with a finite size?

Systematic sampling (correct)

Area sampling

Cluster sampling

Purposive sampling

What is the purpose of a Bill of Quantities (BOQ) in a construction project?

To list all materials, labor, and costs required for the project (correct)

To oversee the execution of the project

To interpret contract documents

To monitor quality control during the project

When using systematic sampling, what is the key process before choosing a random starting point?

Selecting every 2nd element

Arranging the population elements in a random order

Choosing a variable interval

Sorting the elements in sequential order (correct)

Which of the following best describes the process of Surveying in the context of construction?

Measuring and mapping land, determining boundaries and distances Signup and view all the answers

What introduces bias in systematic sampling if present in the population list?

Hidden patterns Signup and view all the answers

What is one of the key responsibilities in Construction Supervision according to the text?

Reviewing and certifying payment certificates Signup and view all the answers

Which process involves measuring or scaling dimensions from drawings and recording them in an easily understood format?

Taking off Signup and view all the answers

Why is effective Construction Supervision important for a construction project?

To ensure project success and minimize risks Signup and view all the answers

In construction and architectural work, why is 'taking off' considered an essential step?

To measure dimensions from drawings Signup and view all the answers

In Construction Project Management, what does 'Scope Management' specifically refer to?

Defining project scope and managing changes Signup and view all the answers

What is the primary purpose of a Bill of Quantities (BOQ) in a construction project?

To estimate the total project cost Signup and view all the answers

Which responsibility falls under Construction Supervision?

Verifying payment certificates Signup and view all the answers

What is the key role of Construction Project Management in a construction project?

Monitoring project expenses Signup and view all the answers

Which activity is primarily associated with taking off in construction projects?

Extracting quantities from drawings Signup and view all the answers

Why is interpreting contract documents crucial in construction projects?

To clarify any ambiguities or disputes Signup and view all the answers

What is the key advantage of systematic sampling for a population with a natural order?

Efficiency and ease of implementation Signup and view all the answers

Why might systematic sampling introduce bias in the sample?

It assumes the population list is randomly ordered Signup and view all the answers

In construction and architectural work, what does 'taking off' primarily involve?

Measuring or scaling dimensions from drawings Signup and view all the answers

What is a limitation of using systematic sampling for selecting samples from a population?

Assumption of a randomly ordered population list Signup and view all the answers

When selecting samples using systematic sampling, what is the purpose of choosing a random starting point within the interval?

To maintain randomness in the selection process Signup and view all the answers

Study Notes

Probability Sampling

For a population with a finite size, the preferred sampling method is systematic sampling.

Bill of Quantities (BOQ)

The primary purpose of a BOQ in a construction project is to provide a detailed list of materials, labor, and equipment required for the project.
A BOQ helps to facilitate accurate costing, tendering, and project management.

Systematic Sampling

Before choosing a random starting point in systematic sampling, the key process is to decide on a fixed interval or sampling interval.
The key advantage of systematic sampling for a population with a natural order is that it is simple to implement and can be more efficient than other methods.
A limitation of using systematic sampling is that it can introduce bias in the sample if the population list has a patterns or periodicities.

Construction Project Management

The key role of Construction Project Management in a construction project is to oversee and coordinate the planning, design, and construction phases.
Effective Construction Supervision is important for a construction project as it ensures that the project is completed on time, within budget, and to the required quality standards.
One of the key responsibilities in Construction Supervision is to ensure that the project is constructed according to the approved design and specifications.

Surveying and Taking Off

In the context of construction, Surveying involves measuring or scaling dimensions from drawings and recording them in an easily understood format.
'Taking off' is considered an essential step in construction and architectural work as it involves quantifying the materials and components required for a project.
Taking off primarily involves measuring or scaling dimensions from drawings and recording them in an easily understood format.

Scope Management

In Construction Project Management, Scope Management specifically refers to the process of defining, planning, and controlling the project scope to ensure that it is completed on time, within budget, and to the required quality standards.

Construction Supervision and Contracts

Interpreting contract documents is crucial in construction projects as it ensures that all stakeholders understand their roles, responsibilities, and obligations.
One of the key responsibilities that falls under Construction Supervision is to ensure that the project is constructed according to the approved design and specifications.

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Description

Learn about the preferred sampling method for populations with a finite size and understand the process and definition of systematic sampling. Systematic sampling involves selecting every kth element from a list of the population.

Preferred Sampling Methods for Finite Population

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