Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain. After a tsunami, a disaster area is divided into 200 equal grids. Twenty of the grids are selected, and every occupied household in the grid is interviewed to help focusa CITE What type of sampling is used? OA. Stratified sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed. OB. Cluster sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid. C. Cluster sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed. O D. Stratified sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid. What potential sources of bias are present, if any? Select all that apply. A. The sample only consists of grids that are easy to get. These grids may not be representative of the population. B. Certain grids may have been much more severely damaged than others. The grids that are selected may not be representative in terms of damage. C. Certain grids may have been much more severely damaged than others. Severely damaged grids may have fewer occupied households D. There are no potential sources of bias. 4
Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain. After a tsunami, a disaster area is divided into 200 equal grids. Twenty of the grids are selected, and every occupied household in the grid is interviewed to help focusa CITE What type of sampling is used? OA. Stratified sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed. OB. Cluster sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid. C. Cluster sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed. O D. Stratified sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid. What potential sources of bias are present, if any? Select all that apply. A. The sample only consists of grids that are easy to get. These grids may not be representative of the population. B. Certain grids may have been much more severely damaged than others. The grids that are selected may not be representative in terms of damage. C. Certain grids may have been much more severely damaged than others. Severely damaged grids may have fewer occupied households D. There are no potential sources of bias. 4
A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain.
After a tsunami, a disaster area is divided into 200 equal grids. Twenty of the grids are selected, and every occupied household in the grid is interviewed to help focus relief efforts on what residents require the most.
What type of sampling is used?
OA. Stratified sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed.
OB. Cluster sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid.
OC. Cluster sampling is used, since the disaster area is divided into grids, and some of those grids are selected and everyone in those grids is interviewed.
O D. Stratified sampling is used, since the disaster area is divded into grids, and a random sample is taken from each grid.
What potential sources of bias are present, if any? Select all that apply.
point possidic
A. The sample only consists of grids that are easy to get. These grids may not be representative of the population.
B. Certain grids may have been much more severely damaged than others. The grids that are selected may not be representative in terms of damage.
C. Certain grids may have been much more severely damaged than others. Severely damaged grids may have fewer occupied households.
D. There are no potential sources of bias.
4
Transcribed Image Text:K←
Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain.
Every eighth person entering a sporting goods store asked to choose his or her favorite sport from a list of five different sports that includes a description of each.
What type of sampling is used?
O A. Stratified sampling is used, because the population is divided into groups, and random samples are taken from each group.
OB. Convenience sampling is used, because the researchers contact the easiest people to reach.
OC. Systematic sampling is used, because every eighth person selected.
OD. Cluster sampling is used, because the population is divided into groups, several groups are selected, and every person in those groups is contacted.
O E. Simple random sampling is used, because every sample of a given size has an equal chance of being selected.
What potential sources of bias are present, if any? Select all that apply.
A. People who do not enter the sporting goods store are not sampled.
B. If there is a regular pattern to the people entering the sporting goods store, the sample may not be representative
C. The wording of the question may direct respondents towards a particular sport.
D. There are no potential sources of bias.
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