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An accounting firm has 72 members in 6 departments. Each department has 1 senior partner (SP),...

An accounting firm has 72 members in 6 departments. Each department has 1 senior partner (SP), 2 junior partners (JP) and 9 associates (AS). A sample of 12 of the firm's members will be chosen to attend a professional conference. Choose the best description of each of these sampling methods.

Choose the first 12 names on the alphabetical listing of all 72 of the firm's members. →  

Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Multistage Sampling
Systematic Sampling
Convenience Sampling

Choose 1 department at random and select every member of that department. →  

Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Multistage Sampling
Systematic Sampling
​Convenience Sampling

Choose 1 SP at random from the 6 SPs, 2 JPs at random from the 12 JPs, and 9 ASs at random from the 54 ASs. →

Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Multistage Sampling
Systematic Sampling
​Convenience Sampling

Choose 12 members at random from all 72 of the firm's members. →  

Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Multistage Sampling
Systematic Sampling
​Convenience Sampling

Rank the firm's members by height and select every sixth person. →  

Simple Random Sampling
Stratified Random Sampling
Cluster Random Sampling
Multistage Sampling
Systematic Sampling
​Convenience Sampling

math   Statistics-And-Probability   
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Answer #1

Choose the first 12 names on the alphabetical listing of all 72 of the firm's members. →  

Answer: Convenience Sampling, because here the selection of members are based on individuals convenient. Each member is not getting equal chance for selection

Choose 1 department at random and select every member of that department. →  

Answer: Multistage Sampling

Choose 1 SP at random from the 6 SPs, 2 JPs at random from the 12 JPs, and 9 ASs at random from the 54 ASs. →

Answer: Stratified Random Sampling because we create homogenous group of members and than select members from each group randomly.

Choose 12 members at random from all 72 of the firm's members. →

Answer: Simple Random Sampling because every member has an equal chance of selection

Rank the firm's members by height and select every sixth person. →  

Answer: Systematic Sampling

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